Answer:
a) $46.40
b) 210 miles
Step-by-step explanation:
a) $32 + (83miles)*($0.18/mile) = $32 + $14.40
= $46.40
b) $32 + (Xmiles)*($0.18/mile) = $69.80
(Xmiles)*($0.18/mile) = $69.80-$32
Xmiles = ($69.80-$32)/($0.18/mile)
X miles = ($69.80-$32)/($0.18/mile)
X = 210 miles