# Chapter P, Prerequisites - Chapter P Test - Page 79: 1

(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:$C=9+1.5(4)=\$15$

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