You are responsible for maintenance for a fleet of delivery trucks. truck number 1517 traveled 551.7 miles and used 23.6 gallons of gas this week. truck 1519 traveled 417 miles and used 19.8 gallons. truck 1524 traveled 656 miles and used 25.7 gallons. truck 1530 traveled 342 miles and used 15.1 gallons. what was the average gas mileage for these trucks for the week?

answer: ok

step-by-step explanation:

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.