Use FOIL to multiply binomials by multiplying each term in the first binomial by the terms in the second binomial.
(4x - 3)(x + 5)
4x^2+20x-3x-15
Now combine like terms.
answer : 4x^2+17x-15
Answer:
I remember my teacher saying that when you get the answer you have to * when you get the answer
So first you multiply 2 and 4x to get 8x. Then you multiply 2 and 5 to get 10. So the problem will look like:
8x+10=90
Then you subtract 10 on both sides of the problem to get:
8x=80
And then divide 8 on both sides to get
x=10
18% of 40 is 7.2
Change the percentage (18%) into a decimal by dividing it over 100:
18/100 = 0.18
Divide 7.2 by the decimal (0.18):
7.2 / 0.18 = 40
