During a sale, every item in a store is 80% of its regular price. 1. If the regular price of a T-shirt is $10, what is its sale price?
$10:100% so $?: 80% So what is the sale price? 2$
2. The regular prices of five items are shown here. Find the sale price of each item.
item 1
item 2
item 3
item 4
item 5
regular price
$.
$4
$10
$55
$120
sale price

Jeffery conducted a survey in his school and found that 30 of the 50 eighth grade students' favorite subject is mathematics. based on the results, jeffery concluded that out of the 200 students in his school, 120 students' favorite subject is mathematics. select the statement that is true about jeffery's conclusion. a. jeffery's conclusion is not valid because the sample was biased since only 200 students were surveyed. b. jeffery's conclusion is valid because the sample was random since all of the students were eighth grade students. c. jeffery's conclusion is valid because the sample was random. d. jeffery's conclusion is not valid because the sample was biased since all of the students were eighth grade students.

Kayla and alberto are selling fruit for a school fundraiser. customers can buy small boxes of grapefruit and large boxes of grapefruit. kayla sold 3 small boxes of grapefruit and 1 large box of grapefruit for a total of $65. alberto sold 1 small box of grapefruit and 1 large box of grapefruit for a total of $55. what is the cost each of one small box of grapefruit and one large box of grapefruit?

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?