A clothing store offers customers a holiday sale of 20% off the price of x items. A customer then has an additional 15% off coupon that can be used when checking out. Which of the following functions represents the final price P(x) of the items purchased? P(x) = 0.68x
P(x) = 0.35x
P(x) = 0.05x
P(x) = 0.03x

Step-by-step explanation:

Original price = x

Sale price  = 20% off:

Further discount 15% off:

The function is:

Correct choice is A

answer: 12

step-by-step explanation:

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.