# Math 15 questions

*label*Mathematics

*timer*Asked: Jun 15th, 2018

*account_balance_wallet*$20

**Question description**

"You should show all of your work to receive full credit. If you do not show work, you may earn only partial or no credit."

Attached is the document

## Tutor Answer

See attached

Please show all work on the exam.

1) Simplify the following expression:

−3(5 − 7 ) − 2 (15 − 9 )

3

2

= -3(-2)3 -2(6)2

=-3* -8 -2(36)

=24-72

= -48

2) Simplify the following expression:

7

−

6

2

+ − 1 5

2 3

49 - 5

6

= 36

= 49 - 30

36

36

= 19

36

3) Simplify the radical expression:

5 32 − 3 48 + 4 18

Math 037

Midterm Exam

Page 2 of 8

= 5√16 ∗ 2 - 3 √16 ∗ 3 + 4√9 ∗ 2

= 5√16 √2 - 3 √16 √3+ 4√9√2

= 5*4√2 - 3*4 √3+ 4∗ 3√2

=20√2 - 12 √3+ 12√2

=32√2 - 12 √3

4) Evaluate the following expression for

x = −5

and

y = −6

−2 x3 − 3 y 2

= -2(-5)3 -3(-6)2

= -2(-125) -3(36)

=250- 108

= 142

5) Solve the equation. Show all work and show the complete check of your answer:

5x −14 = −29

5x = -29 + 14

5x = -15

x= -15/5

x=-3

Math 037

Midterm Exam

Page 3 of 8

6) Solve the equation. Show all work and show the complete check of your answer:

5 − 4 ( 7 x + 2) = 5x − 6 (6x − 3)

5 -28x-8...

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