Question

Evaluate the expression 8 –
5xy^3. for x = 3 and y = – 2.

A)278
B)-112
C)-72
D)128

Answer 1

Answer:

D) 128

Step-by-step explanation:

Because we will be replacing the variables with numbers we have to that we will have to do the exponent first because of PEMDAS.

$8-5(3)(-2)^3$

$8-5(3)(-8)$

$8-15(-8)$

$8-(-120)$

$8+120=128$