(a) $C=9+1.5x$ (b) $\$15$
Work Step by Step
(a) The cost consists of the flat cost of $\$9$ and the topping cost of $\$1.5$ per topping: $C=9+1.5x$ (b) We have 4 toppings, so the cost is: $C=9+1.5(4)=\$15$
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.