Evan cut a triangular piece of cloth to use in a quilt. The perimeter of the cloth is 9¾cm. The base of the triangular cloth is 2 ¼cm. The remaining two sides are the same length. Choose the expression to find the length of the other two sides of Evan’s cloth.

9¾ − 2s = 2 ¼
, , 9¾ , − , 2s , = , 2 ¼

2 ¼ −2s = 9¾
, , 2 ¼ , −, 2s , = , 9¾,

9¾ + 2s = 2 ¼
9¾ +, , 2s , = , 2 ¼, ,

9¾ − s = 2 ¼
9¾ , − , s , = , 2 ¼

Let r = 3. what is the value of r + 58?

You eat 8 strawberries and your friend eats 12 strawberries from a bowl. there are 20 strawberries left. which equation and solution give the original number of strawberries?

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.