Chapter 1 & 2 Midterm Review - A2

Which set of real numbers does ¹/₅ belong to?

Mark all that apply.

• natural numbers

• whole numbers

• integers

• rational numbers

Solve the following:

-2 ⋅ (3 + 8 ÷ 4)²

Evaluate the following expression.

4m + 5 if m = 6

4x² - 64y²

• ( 4x - 64y) (4 x + 64y)

• ( 2x - 32y) (2 x + 32y)

• ( 2x - 8y) (2 x - 8y)

• ( 2x - 8y) (2 x + 8y)

Expand (x + 6)².

• x² + 36

• x² + 6x + 36

• x² + 12x + 6

• x² + 12x + 36

Solve for b in the formula A=5ab.

• $b\ =\ \frac{A}{5a}$
  

• $b\ =\ 5Aa$
  

• $A\ =\ 5ab$
  

• $b\ =\ \frac{5a}{A}$
  

Solve for x:

7x - 3x - 8 = 24

• 8

• -8

• 3.2

• 4

Solve:
3(x - 2) = 18

• 6.7
• 4
• 8
• -4

Evaluate each expression.
| x + 9 | = -5

• -14
• -4
• {-14, -4}
• no solution

∣ 2x + 9 ∣ = 15

• x = 3 
• x = 3
  x = -6
• x = 3
  x = -12
• x = 6
  x = -12