Answer:
D) 2x² + 4x - 30
Step-by-step explanation:
Follow the FOIL method:
FOIL =
First
Outside
Inside
Last
...and is the order you multiply to solve:
(x + 5)(2x - 6) =
(x)(2x) = 2x²
(x)(-6) = -6x
(5)(2x) = 10x
(5)(-6) = -30
Combine like terms. Simplify:
2x² -6x + 10x - 30 = 2x² (-6x + 10x) - 30 = 2x² + 4x - 30
2x² + 4x - 30 is your answer.
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Answer:
Step-by-step explanation:
you want to divide 36 by 8 because you have 36 people and the recipie only makes it for 8.
You know that you will need to make the recipe 4.5 times.
So, multiply all the ingredient numbers by 4.5
2 x 4.5 = 9 quarts of water
3 x 4.5 = 13.5 sticks of cinnamon
1 x 4.5 = 4.5 tablespoons of coffee
For a single payment with compound interest, the equation to use is F=P(1+i)^n where F is the value after n periods, P is the present value, and i is the interest rate.
If we want the final value F to double in 5 years, F is then equal to P then n=5. The equation is now:
2P=P(1+i)^5
2=(1+i)^5
i=14.87% per year
