Maria bought seven t-shirts after the first week of school. Two weeks later, half of all of her shirts shrank in the dryer. Now she only has 13 t-shirts left. How many T-shirts did she have before the first day of school?

19

Step-by-step explanation:

13 x 2,

26-7 = 19

You have 13 now you would just multiple by 2 then subtract 7 because she bought them after the first week

19 shirts

Step-by-step explanation:

13/.5=26

26-7=19

correct answer:

b.(19,-2)

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x