Express your answer in scientific notation.

9.3 x 10^7 - 3.14 x 10^6

a. 8.98 x 10^6

b. 8.1 x 10^7

c. 8.1 x 10^6

d. 8.98 x 10^7

Afamily has two cars. the first car has a fuel efficiency of 25 miles per gallon of gas and the second has a fuel efficiency of 15 miles per gallon of gas. during one particular week, the two cars went a combined total of 1025 miles, for a total gas consumption of 55 gallons. how many gallons were consumed by each of the two cars that week?