10. a car goes from a complete stop to 90 km/hr in
three hours. what is its acceleration?

for this case we have a function of the form:

thus,

x: independent variable

f (x): dependent variable

since (x + k) is a factor of f (x) then it follows that:

for f (x) = 0 we have:

from here, we clear the value of x:

then, replacing this value of x in the function, we have:

the following must be true:

attachment?

step-by-step explanation:

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.