12. (03.06 MC)
Write the equation of the line that passes through the points (1, 7) and (5, 15) using function notation. (5 points)

y = 2x + 5

y = 4x + 8

f(x) = 2x + 5

f(x) = 4x + 8

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.

the diameter is 16 cm. are you a teacher?

step-by-step explanation:

step-by-step explanation:

what grade level is this? need to know so i can look in my old textbooks!