Xavier recently returned from a road trip he took as part of his summer vacation. on his trip away from home, he made two stops to buy gasoline. he first purchased 7 gallons of gasoline for $2.68 per gallon and later on purchased 14 gallons at a price of $2.63 per gallon. on his return trip, he made only one stop for gasoline, purchasing 16 gallons at $3.11 per gallon. what was the average fuel cost per gallon on xavier's summer trip? express your answer rounded to the nearest cent.

Step-by-step explanation:

\text{Average cost} = \dfrac{\text{Total cost}}{\text{Number of gallons}}

1. Total cost

    7 gal × $2.68/gal = $  18.76

+ 14 gal × $2.63/gal =     36.82

+ 16 gal ×  $3.11/gal  =    49.76

                    TOTAL = $105.34

2. Total gallons

Total = 7 + 14 + 16 = 37 gal

3. Average cost

problem:

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

f(5/2) = 10/3

i hope this !

54.864 meters

step-by-step explanation: