Question

John is at the beach and he wants to rent a Jetske and beach chairs for the day the following functions represent the cost for each wear j(x) represents the cost of the Jet ski and B(x) represents the cost of the beach chairs .

Answer 1

this is the sum of both equations, then

`\begin{gathered} J(x)+B(x)=C(x) \\ 30x+7+5x+3=C(x) \\ 35x+10=C(x) \end{gathered}`

answer: C(x) = 35x + 10