Amerchant realizes a markup of $42 by selling an item at a markup of 37.5% of cost. the merchant's overhead expenses are 17.5% of the regular selling price. at a promotional sale, the item was reduced in price to $121.66.
(a)what is the regular selling price?
(b)what is the rate of markup based on the regular selling price?
(c)what is the rate of markdown?
(d) what is the profit or loss during the promotional sale?

19.

step-by-step explanation:

you add the 9 in the tens column since it is a single digit and 9 plus zero is 9 so it is 19

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40