Question

Please help Use the expression 8a + 16c.

Part A
Factor the expression using the GCF.
A. 2(4a + 8c)
B. 4(2a + 4c)
C. 8(a + 2c)
D. 16(12a + c)
Part B
What is the value of the expression when a = –5 and c = –1? Enter your answer in the box.

Answer 1

Step-by-step explanation: your answer would be -42 so heres how i did it: Evaluate for a=−5,c=−1

(8)(−5)+(2)(−1)

(8)(−5)+(2)(−1)

=−42

Answer 2

C 89a + 2c)

Explanation:

The largest factor of both 8 and 16 is 8. So, 8 = GCF

factor out an 8 and you get 8(a + 2c)

To check if you are correct, multiply and see if you get what you started with.