equations and inequalities quiz

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

•  $x\ =\ 2$  

•  $x\ =\ 8$  

•  $x\ =\ -2$  

•  $x\ =\ -8$  

Tags

CCSS.8.EE.C.7B

solve for x

• 25/2
• 12/7
• -5/2
• -3/4

Your taxi fare is $2.50 per mile, plus a $5 fee. You have a budget of $20. Which inequality models this scenario?

• 5x + 2.50 ≤ 20

• 2.50x + 5 < 20

• 2.50x + 5 ≤ 20

• 7.50x < 20

Tags

CCSS.7.EE.B.4B

Solve the following compound inequality:

−4x + 1 ≤ 21 and 5x + 2 < 22

• x > −5 or x ≤ 4

• x ≥ −5 or x < 4

• x > −5 and x ≤ 4

• x ≥ −5 and x < 4

−6 < 2t − 5 < 3

• −0.5 < t < 1

• 0.5 < t < −1

• −11/2 < t < 2

• 11/2 < t < −2

The sum of two numbers is 50. The first is 5 less than 4 times the second. Which number is the single variable ?

• first

• second

• third

• sum

Tags

CCSS.8.EE.C.8C

The sum of three consecutive numbers is 72. What are the smallest of these numbers?

• 21

• 23

• 25

• 26

Tags

CCSS.8.EE.C.7B

A father is now four times as old as his son. If the sum of their ages 10 years ago was 60, find the present age of the father.

• 48

• 56

• 60

• 64

Tags

CCSS.8.EE.C.8C

ax + c = R
(solve for x) 

• ax = R + c
• ax = R - c
• x = a(R-c)
• x = (R-c) / a 

Tags

CCSS.HSA.REI.B.3

F = (GMm) / r²
(solve for G) 

• G = (Fr²) / (Mm)
• G = FMmr²
• Fr² = GMm
• Fr²M² = G

Tags

CCSS.HSA.CED.A.4