The speed s (in miles per hour) of a car driving on ice can by given by s=2.12d√, where d is the stopping distance (in feet). What is the approximate stopping distance of a car traveling 30 miles per hour? Round your answer to the nearest hundredth

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.

b, i believe, but not sure.

answer: 486in^2

step-by-step explanation:

56 44 2 4

step-by-step explanation: