Quiz about KEYSTONE REVIEW #1

Question 1

Which is an algebraic expression for "6 less than k"?

Accepted Answer

k-6

Answer

$$\frac{6}{k}$$

Answer

$$\frac{k}{6}$$

Answer

6-k

Question 2

Which is an algebraic expression for "the product of a and 10"?

Accepted Answer

10a

Answer

a+10

Answer

a-10

Answer

$$\frac{a}{10}$$

Question 3

Which is an algebraic expression for "9 more than v"?

Accepted Answer

v+9

Answer

v-9

Answer

9-v

Answer

9v

Question 4

A container of milk contains 64 ounces. Which equation models the number of "n" ounces remaining after drinking "m" ounces?

Accepted Answer

64-m=n

Answer

m-64=n

Answer

n-64=m

Answer

n-m=64

Question 5

Which equation models the relationship in the table if "r" represents the row number and "t" represents the number of tulips?

Accepted Answer

t=3r

Answer

r=3t

Answer

$$\frac{r}{t}=3$$

Answer

t=r+3

Question 6

Simplify: $$5^3-15\div2+2$$

Accepted Answer

119.5

Answer

2

Answer

57

Answer

112

Question 7

Simplify: $$8\left(5-3\right)^3+9$$

Accepted Answer

73

Answer

57

Answer

40

Answer

22

Question 8

Evaluate $$2ab+c$$ for $$a=3.3$$ , $$b=4.5$$ , $$c=2$$

Accepted Answer

31.7

Answer

18.4

Answer

32.8

Answer

41.6

Question 9

Evaluate $$\left(r-s\right)^2$$ for r=9 and s=6.5

Accepted Answer

6.25

Answer

2.5

Answer

3.5

Answer

12.25

Question 10

A shirt is on sale for $25 at a local department store. There is also a 4% sales tax. What is the total cost of the shirt, including the sales tax?

Accepted Answer

$26

Answer

$25

Answer

$29

Answer

$35

Question 11

You can find the distance "d" an object falls in feet for time "t" in seconds using the formula $$d=16t^2$$ . Suppose a ball is dropped out of a window of a tall building. How far will the ball fall in 3 seconds?

Accepted Answer

144 ft

Answer

96 ft

Answer

48 ft

Answer

16 ft

Question 12

Which is an algebraic expression for "the quotient of r+5 and b"?

Accepted Answer

$$\frac{r+5}{b}$$

Answer

$$\frac{r}{b+5}$$

Answer

$$\frac{b}{r+5}$$

Answer

$$\frac{b}{r}+5$$

Question 13

Which number has the same value as $$-\left|-\frac{3}{4}\right|$$ ?

Accepted Answer

-0.75

Answer

-0.34

Answer

0.34

Answer

0.75

Question 14

Which group of numbers is ordered from least to greatest?

Accepted Answer

$$-1,\ -\frac{3}{4},\ -0.7$$

Answer

$$-0.7,\ -\frac{3}{4},\ -1$$

Answer

$$-1,\ -0.7,\ -\frac{3}{4}$$

Answer

$$-\frac{3}{4},\ -0.7,\ -1$$

Question 15

Suppose "a" is a nonzero integer. Which statement is never true?

Accepted Answer

$$\left|a\right|=-\left|a\right|$$

Answer

$$a>-a$$

Answer

$$a<-a$$

Answer

$$\left|a\right|=-a$$

Question 16

Which number is NOT an integer?

Accepted Answer

$$-\frac{2}{3}$$

Answer

-10

Answer

0

Answer

5

Question 17

Suppose your brother says that fractions are rational numbers, but fractions are not integers. Which number is a counterexample for this statement?

Accepted Answer

$$-\frac{9}{3}$$

Answer

$$\frac{10}{3}$$

Answer

$$\frac{5}{3}$$

Answer

$$-\frac{5}{3}$$

Question 18

Simplify: $$10+\left|-3\right|+\left(-3\right)$$

Accepted Answer

10

Answer

16

Answer

7

Answer

4

Question 19

Evaluate: $$(3a+b)+(-20)$$ for $$a=5$$ and $$b=-1$$

Accepted Answer

-6

Answer

-2

Answer

20

Answer

22

Question 20

Which expression has a value different from the others?

Accepted Answer

$$-9+13$$

Answer

$$-7+3$$

Answer

$$5+\left(-9\right)$$

Answer

$$-8\frac{2}{3}+\ 4\frac{2}{3}$$

Question 21

In a 12 hour period, the temperature rose from $$-12\ \degree F$$ to $$18\degree F$$ . What is the increase in temperature in degrees?

Accepted Answer

30

Answer

6

Answer

-6

Answer

-30

Question 22

The value of -(-(-27))) is NOT the same as which expression?

Accepted Answer

-42+17

Answer

-29+2

Answer

-12.8+(-14.2)

Answer

8+(-35)

Question 23

Suppose you have $95 in your checking account. You pay for a $34 sweater using your debit card. Then you deposit a $32 check. Later, you withdraw $16 at the grocery store. What is the balance in your account?

Accepted Answer

$77

Answer

$145

Answer

$81

Answer

$13

Question 24

Evaluate: $$-\left|a-b\right|+\left|c\right|$$ for $$a=-3$$ , $$b=4$$ , and $$c=-4$$

Accepted Answer

-3

Answer

11

Answer

3

Answer

-11

Question 25

Which expression has a value different from the others?

Accepted Answer

-7-12

Answer

17-12

Answer

12-7

Answer

12+(-7)

Question 26

Find the next number in the pattern:

11, 8, 5, 2, ...

Accepted Answer

-1

Answer

1

Answer

0

Answer

-(-2)

Question 27

One January day, the temperature at noon is $$8\degree F$$ . During the afternoon, the temperature drops 5 degrees. By dawn, the temperature has fallen another 9 degrees. What is the temperature at dawn?

Accepted Answer

-6

Answer

11

Answer

6

Answer

-11

Question 28

Simplify: (-3)(-3)(2)(2)(-1)

Accepted Answer

-36

Answer

-6

Answer

6

Answer

36

Question 29

A Mach number "M" indicates the speed of a supersonic airplane. You can find the airplane's speed "a" in miles per hour using the formula $$a=Ms$$ where "s" is the speed of sound at the altitude of the airplane. Find an airplane's speed in miles per hour if the airplane travels at Mach 2.5 at an altitude where the speed of sound is 710 mi/h.

Accepted Answer

1775 mi/h

Answer

177.5 mi/h

Answer

284 mi/h

Answer

2840 mi/h

Question 30

Which expression does NOT have the same value as -11+(-11)+(-11)+(-11)?

Accepted Answer

$$\left(-11\right)^4$$

Answer

-44

Answer

4(-11)

Answer

33-77

Question 31

Evaluate $$-ac+bc$$ for $$a=-2$$ , $$b=6$$ , and $$c=-3$$

Accepted Answer

-24

Answer

-6

Answer

6

Answer

24

Question 32

Using the table, what was the average temperature for the week?

Accepted Answer

$$-1\degree F$$

Answer

$$-7\degree F$$

Answer

$$1\degree F$$

Answer

$$4\degree F$$

KEYSTONE REVIEW #1

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