( Someone Help Please ) Calvin bought gas for his car.

gas cost $3.25 per gallon
Calvin bought 14.2 gallons.
What was the total cost for Calvin's gas?

Express the answer as dollars. cents.
Example: 15.65 (Not the answer, just example)

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

What is the solution of log2  (3x  -  7)  =  3? 4 5

Ineed to know the answer right now! !