A hybrid car has an EPA rating of 54 mpg on the highway and 50 mpg in the city. If the gas tank holds 11.3 gallons of gas, what is its range on the highway? A. 610.2 miles b. 565.5 miles C. 512.6 miles D. 594.3 miles

Multiply the gallons by the mileage rate for the highway:

11.3 x 54 = 610.2

The answer is A. 610.2 miles

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.