90 • 0.06 = 5.4
90 • 0.2 = 18
5.4 + 18 = 23.4
90 + 23.4 = 113.4
So your answer is 113.40 dollars
Answer:
The answer is B.
Step-by-step explanation:
Lets solve it
first multiply each term by x :-
x^2 - 7 = 6x
x^2 - 6x - 7 = 0
(x - 7)(x + 1) = 0
x = 7 and x = -1
Step-by-step explanation:
f(x) =x2- 10x +21
10x-2x=21
8x = 21
x =21/8
x = 2.625