Question

Lf k(x) = 5x – 6, which expression is equivalent to (k+ k)(4)?

Answer 1

k(4+4)=28.

Explanation:

If k(x)=5x-6, then k(4)=5(4)-6=20-6=14.

k(4+4)=k(4)+k(4)=14+14=28.