50 points decreased by 26% is 37, because to find the percentage, all you have to do is multiply the number you are trying to decrease the percentage of, and take the percentage as a decimal form and multiply the two. Then, you have to subtract that number from the base to get your final answer. :)
Answer 5 is the y intercept and -2 is the slope. It is because of y=mx+b where b is the y intercept and m is the slope
Lets say x = 89.99 and y = 56.49
P% * x = y
P% = y/x
56.49/89.99 = 0.6277
0.6277 * 100 = 62.77
But because we are looking for how much off the sale is:
100% - 62.77%
= 37.23%
The sale price is 37.23% off.
14*5= 70
3*5= 15
70+15= 85
The answer for the first question is 85
