Solving Equations Test Review

Climbing a mountain pass on your bike, you decelerate from 15 m/s to 6 ms over 6 seconds. Use the equation a=(v-v0)/t to find your acceleration. (Hint: v=15, v0=6, t=6)

1.5 m/s^2

Riding downhill on your bike, you accelerate from 4 m/s to 9m/s over 8 seconds. Use the equation a=(v-v0)/t to find your acceleration. (Hint: v=9, v0=4, t=8)

5/8

4(3k-6)=6(2k-4)

Infinite Solutions

2(8j+3)=5(3j-1)+j

No solution

-6(4d+10)+7d=-2d

d=-4

40=9f+4

f=4

7g-9=5g+5

g=14

2(7r+5)=6(2r+5)+2r-20

infinite solutions

3(4j+1)=3(3j-1)+j

j=-3

-7(-m-3)=45-m

m=3

Jill solved an equation 2/3(9x+15)=17-3(x+12) for x. Her answer was x=7. Is she correct?

no

2(5k-13)=5(2k-5)

no solution

2(6r+7)-r=5(2r+3)-25

r=-24

3/8(8x-24)=3/4(12x+16)

x=-3.5

Connor solved an equation 6(x-2)=15(10x-20) for x. His answer x=2. Is he correct?

x=2

-5(3x-4)=2(9-6x)

x=2/3