Question

Rhonda sells textbooks. Her paycheck is found using the formula p=30b+15, where b is the number of textbooks she sells. Solve the formula for b.

Answer 1

p = 30b + 15...subtract 15 from both sides
p - 15 = 30b...now divide both sides by 30
(p - 15) / 30 = b or 1/30p - 1/2 = b