Alex took out a 7/1 variable-rate mortgage for $140,000. the interest rate for the first period was fixed at 5.25%, and the loan was amortized over 30 years. at the end of the initial loan period, the interest rate was 6.75%, plus a 1.5% margin. what was alex's monthly mortgage payment during the initial fixed-rate period?

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.

c

step-by-step explanation:

it would be see because your formula is f(x)=6x, so 6 times 1 is 6 and you go on and the best answer is c.