The regular price of an item at a store is p dollars. The item is on sale for 30% off the regular price. Some of the expressions shown below represent the sale price, in dollars, of the item.
Expression A : 0.7p
Expression B : 0.3p
Expression C : 1 − 0.3p
Expression D : p − 0.7p
Expression E : p − 0.3p
Which two expressions each represent the sale price of the item?

32

step-by-step explanation:

these are your clues: 1. kim ran 18 races2. this was four fewer races than twice thenumber, notice it says twice the number, so you would do the equation 18x2-4; which equals the number 32.thus, 32 is your answer.

First locate the turning point (vertex) of the graph. which is at the coordinates x=5 and y=9 or (5; 9).to determine whether it's a maximum or mininum value, you have to discern whether the vertex's y-value is the highest value or lowest value the graph can reach. since the vertex's y-value, 9 is the highest value the graph can reach, it will be a maximum.another basic way to determine whether the vertex's value is max or min is to see if the graph is smiling or sad. if it's smiling, the turning point/vertex would be a minimum, while a sad parabola would have a maximum y-value at the vertex.