Astudent is running a 10-kilometer race. he runs 1 kilometer every 4 minutes. select the function that describes his distance from the finish line after x minutes. explain your work.
a)f(x)=1/4x+4
b)f(x)=-1/10x+4
c)f(x)=1/10x+10
d)f(x)=-1/4x+10

4th option is correct xy=-10

if this was to u plzz mark me the brainliest

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.

what is

step-by-step explanation: