Let 
be the unknown number.
As per the question, we have
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➺
➺
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Therefore, 
should be subtracted from the product of 
and 
to get 
.
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Answer:
The answer is x = 25%
Step-by-step explanation:
84 represents 100% of the questions.
63 represents x% of the correct answers.
x = (63x100)/84
x = 6300/84
x = 75% correct answers.
percentage of the wrong answers:
100% - 75% = 25%
Answer:
3 and -3
Step-by-step explanation:
Store A :
0.90(45) = 40.50......40.50 + .06(40.50) = 40.50 + 2.43 = 42.93
store B :
46 - 10 = 36......36 * .06(36) = 36 + 2.16 = 38.16
she would have to purchase the rug from store B...because she doesn't have enough money to purchase it from store A. She would have (40 - 38.16) = $ 1.84 in change.
I find this question to be a little misleading....because on a rebate, u dont get the discount right away....u first pay full price, and then later u get the discount mailed back to you. So actually, she wouldn't have enough money at either store.
They way to find the y-intercept from two points is to first find the slope, which can be derived from the formula 
.
Then, you can plug in one of the two points 
or 
into the formula y=mx+b to solve for b, which is your y-intercept.
