2x^3y+18xy-10x^2y-90y
= 2xy(x^2 + 9)- 10y(x^2 + 9)
= (x^2 + 9)(2xy - 10y)
= (x^2 + 9) 2y(x - 5)
= 2y (x^2 + 9) (x - 5)
I did this in my head but the answer is $36 45/5 is 9 9*4 is 36. And if you add another it totals to 45. Thus the answer is $36.
Answer:

Step-by-step explanation:
Required
Determine the formula of B(x)
B(x) implies that B is a function of x and the input is x
Taking the instructions in the question 1 at a time:
<em>Multiplies the input by 100: </em>
<em></em>
<em>Subtracts 5
: </em>
<em></em>
Hence;

Answer:
B because the answer would be 22 14/15