Answer:
Step-by-step explanation:
Strictly speaking, 15% isn't precisely the same as 0.15; 0.15 is the decimal fraction used to calculate 15% of some quantity.
15% of 52 is indeed 7.8. $7.80 is the discount that is to be SUBTRACTED from the regular price ($52). Adding $7.80 to $52 is incorrect.
Also, 52 + 7.8 - 59.8 is incorrect: it's not an equation (but should be one), and we should be subtracting $7.80 from $52.
the third set represent a function
For the points to represent a function then for each value of x there can only be one corresponding value of y
sets 1, 2 and 4 do not obey this and have more than one value of y for a given x
set 1
1 → 1, 2, 3, 4, 5
set 2
3 → 3, - 3 and 5 → 5, - 5
set 4
- 1 → - 1, 1 and - 2 → 4, - 4
The answer would be 15 sixteenths.
The mixed number would be larger depending on what it is...
To solve this, create an equation that follows 45% of a value is 18. This would look like x*.45=18. Now, solve for x, x*.45=18, divide by .45, x=18/.45=40, making your value 40. To check, plug in your value to the equation 40*.45=18 and see if it stays true.
