Explaining step by step the simplest form of the expression 9r(r+3)-2r(r-4)

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Answer 1
Answer: For simplest form, the first thing you'll want to do is get rid of the parentheses:

9r(r + 3) - 2r(r - 4) = 9r^2 + 27r - 2r^2 + 8r 

Now we want to combine like terms:

9r^2 + 27r - 2r^2 + 8r = 7r^2 + 35r

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Which is a factor of x2 5x − 24? (x − 6) (x 6) (x − 8) (x 8)
2 (2x+5) +4 (x+2) = 66
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How many solutions are there for 6x+35+9x=15(x+4)-25

a taxi driver charges a fixed rate of r to pick up a passenger.in addition, the taxi driver charges a rate of m for each mile driven.write a formula to represent t, the total amount this taxi driver will charge for a trip of n miles

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The formula is: t = r + mn. This represents that the total (t) is the fixed rate (r) plus the charge per mile (m) for the number of miles (n).

How much money is 30% of $25.00​

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Answer: $7.50

Step-by-step explanation:

Solve for x: 1/2(4x-6) - 1/4(12x+16)= -(2x-3)+9

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= 2x - 3 - 3x - 4 + 2x - 3 + 9
= 2x - 3x + 2x - 3 - 4 - 3 + 9 (arrange them to general form)
= x - 1

Calculate the monthly payment of the following mortgages:Mortgage Amount: $146,800.00
APR: 5.25 %
Term: 30 years

Mortgage Amount: $113,400.00
APR: 5 %
Term: 15 years

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first one is 7767.2 monthly payment and the second one I believe is 15750 monthly payment
i have no clue i wish could help, I know that apr means average percentage rate if that helps 


The cost of a book is twice that of a magazine.1 book and 4 magazines cost £ 24.
How much does a book cost?

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The answer to your question is 8

Please help me thank u

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simplify inside the ( )'s first, reducing the 6 with the 3 leaving a 2 in the numerator, and reducing the x³ with the x^4, leaving an x in the denominator:
(2/x)²

square both numerator an denominator:

4/x²  check this one not sure just what I know though...tell me if it helps