A store is having a sale on shirts. the sale is buy one shirt and get one 50% off. the original price of on shirt is $34.98. rosa bought several shirts, and the total cost was $314.82. how many shirts did rosa buy?

12 shirts

Step-by-step explanation:

find the price of 2 shirts:

(1/2 x 34.98)+34.98=52.47

for every 2 shirts she buys, she pays $52.47

314.82/52.47=6

she bought 6 pairs= 12 shirts

4 and 5)16.97 or 12√2

6)15.59 or 9√3

7)y = 15.59 or 9√3     x =27

8)17.80

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step-by-step explanation: