Answer
Answer D
Work Step by Step
$t$ = number of hours you can canoe
It costs $\$18$ for the first two hours: $18t$
It costs $\$3$ per hour after the first two hours: $3(t-2)$
You can spend no more than $\$30$. Hence, we have an inequality:
$18t+3(t-2) \leq 30$
The correct answer is D.