Quiz about Brown Algebra 1 Quiz (2/16)

Question 1

Which expression is equivalent to $$3x^2+7x-\left(x+4\right)^2-9$$ ?

Accepted Answer

$$2x^2-x-25$$

Answer

$$2x^2+7x-25$$

Answer

$$2x^2+7x+7$$

Answer

$$2x^2+6x+7$$

Question 2

Select the box that correctly identifies the only solution or the best description of how many solutions there are for each equation.

$$-7x-12=-7x+3\left(-4-x\right)$$

Accepted Answer

$$x=0$$

Answer

Infinite Solutions

Answer

No Solution

Answer

$$x=-4$$

Question 3

Select the box that correctly identifies the only solution or the best description of how many solutions there are for each equation.

$$4\left(2x+3\right)=5x+3x-6$$

Accepted Answer

No Solution

Answer

Infinite Solutions

Answer

$$x=0$$

Answer

$$x=-4$$

Question 4

Select the box that correctly identifies the only solution or the best description of how many solutions there are for each equation.

$$-3+\frac{1}{2}\left(-6x-4\right)=\frac{1}{4}\left(8x+4\right)$$

Accepted Answer

$$x=-4$$

Answer

Infinite Solutions

Answer

No Solution

Answer

$$x=0$$

Question 5

Select the box that correctly identifies the only solution or the best description of how many solutions there are for each equation.

$$3\left(x-7\right)+12=-\frac{1}{4}\left(12x-8\right)-7$$

Accepted Answer

Infinite Solutions

Answer

No Solution

Answer

$$x=0$$

Answer

$$x=-4$$

Question 6

The function g(x) can be represented as g(x) = $$-x^2-6x-2$$ .

Some of the values of the quadratic function h(x) are shown in the table.

Which statement is a true comparison of the properties of g(x) and h(x)?

Accepted Answer

The graph of function g(x) has a higher maximum value and a lower y-intercept value than the graph of function h(x).

Answer

The graph of function g(x) has a higher maximum value and a higher y-intercept value than the graph of function h(x).

Answer

The graph of function g(x) has a lower maximum value and a higher y-intercept value than the graph of function h(x).

Answer

The graph of function g(x) has a lower maximum value and a lower y-intercept value than the graph of function h(x).

Question 7

The graph represents the temperature change over a period of time on a single day.

Which unit would be appropriate for the rate of change in the graph?

Accepted Answer

$$\frac{ ext{degrees}}{ ext{hour}}$$

Answer

$$\frac{ ext{degrees}}{ ext{day}}$$

Answer

$$\frac{ ext{days}}{ ext{degree}}$$

Answer

$$\frac{ ext{hours}}{ ext{degree}}$$

Question 8

Three different basketball teams have played five games each. Liz wants to join the team that is scoring the most points per game so far.

If she ranks each team by its mean score, which team would she join?

Accepted Answer

She would join Team 1, because its mean score is 72.

Answer

She would join Team 1, because its mean score is 90.

Answer

She would join Team 2, because its mean score is 67.6.

Answer

She would join Team 3, because its mean score is 100.

Question 9

Which function is shown on the graph?

Accepted Answer

f(x $$=\left|x+3\right|-1$$

Answer

f (x) $$=\left|x-4\right|+2$$

Answer

f (x) $$=\left|x-3\right|+1$$

Answer

f(x) $$=\left|x-4\right|-2$$

Question 10

Sam ran a distance represented by the expression $$2x+12.$$ Lee ran a distance represented by the expression $$6x+36.$$ Which describes how the distance that Lee ran compares to the distance that Sam ran?

Accepted Answer

The distance that Lee ran is 3 times the distance that Sam ran.

Answer

The distance that Lee ran is 2 times the distance that Sam ran.

Answer

The distance that Lee ran is 4 times the distance that Sam ran.

Answer

The distance that Lee ran is 6 times the distance that Sam ran.

Question 11

Which expression is equivalent to $$\left(x-6\right)\left(2x^2-3x++4\right)$$

Accepted Answer

$$2x^3-15x^2+22x-24$$

Answer

$$2x^2-2x-2$$

Answer

$$2x^2-2x+4$$

Answer

$$2x^3-3x^2+4x-6$$

Question 12

Which graph shows the zeros of the function f(x) $$=3x^2+14x-5?$$

Accepted Answer

D

Answer

A

Answer

B

Answer

C

Question 13

A recording studio charges musicians an initial fee of $60 to record an album. Studio time costs an additional $75 per hour.

Which function represents the total cost, in dollars, C(t), of recording an album as a function of studio time in t hours?

Accepted Answer

C(t) $$=75t+60$$

Answer

C(t) $$=60t-75$$

Answer

C(t) $$=75t-60$$

Answer

C(t) $$=60t+75$$

Question 14

Which numerical expression provides the solution to the equation $$7x^2+4x-8=14?$$

Accepted Answer

C $$\frac{-4\pm\sqrt[]{632}}{14}$$

Answer

A $$\frac{-7\pm\sqrt[]{240}}{2}$$

Answer

B $$\frac{-7\pm\sqrt[]{632}}{7}$$

Answer

D $$\frac{-4\pm\sqrt[]{240}}{14}$$

Question 15

Lisa sends an email to five friends. the next day, each of Lisa's friends forwarded the email to five more people. The process continues for a few days. Which function represents the number of people who will receive the email on the nth day?

Accepted Answer

a_n $$=5^n$$

Answer

a_n $$=5n$$

Answer

a_n $$=n+5$$

Answer

a_n $$=n^5+5$$

Brown Algebra 1 Quiz (2/16)

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