What is the product of (4x – 7)(4x + 7)? a. 16x2 + 56x – 49 b. 8x2 + 56x – 49 c. 8x2 – 49 d. 16x2 – 49

Multiply using FOIL method (first, outside, inside, last)

=(4x – 7)(4x + 7)
=(4x * 4x) + (4x * 7) + (-7 * 4x) + (-7 * 7)
=16x^2 + 28x - 28x - 49
x term cancels out to zero
=16x^2 - 49

ANSWER: D) 16x^2 - 49

Hope this helps! :)

There is no association.

J= r + 9 because since jessica rode 9 more miles than roger, you add 9 miles to rogers mileage.