Evaluate Expressions Using Replacement Values

What is the value of (x + y ) – (x - y ) if x = 6 and y = 2?

• 12

• 0

• 4

• 10

What is the value of 2a - 3b + 6 when a = 2 and b = -5?

• 25

• -17

• -5

• 5

• 36

• 4

• 15

• 43

• -14

• 14

• 15.454545...

• -15.454545...

Let x = 4 and y = 3. Evaluate 3x - 4y.

• 6

• 0

• 2

• -12

_^Evaluate
(a + b)^c + ab
when 
a = 3, b = 5, and c = 2

• 26

• 31

• 79

• 49

Evaluate 8a - b     if a = 10   and   b = 6

• 74

• 38

• 1000

• 9000

Evaluate 2x  if     x = 10

• 210

• 20

• 12

Evaluate the expression using the values m = 7, r = 8, and t = 2. \frac{r}{t}

• 8

• 6

• 4

• 7

• 32

• 8

• 14

• 18