Question

Does anyone know how to do thi problem? Its on my online math course and im stumped. If g(x)=2x + 1, find g(a + h)- g(a)

Answer 1

for g(a + h), replace x with "a+h"
for g(a), replace x with "a"

g(a + h) - g(a) = [2(a+h) + 1] - [2(a) + 1]