Last year, Girl Scout troop #342 sold "b" boxes of cookies. This year, the troop needs to meet a goal of selling at least 420 boxes of cookies. In order to meet that goal, they must sell at least three times the number of boxes of cookies sold last year plus 90. Which inequality represents the number of boxes the troop must sell THIS year

Three cylinders have a height of 8 cm. cylinder 1 has a radius of 1 cm. cylinder 2 has a radius of 2 cm. cylinder 3 has a radius of 3 cm. find the volume of each cylinder ( ! : ”0 )

Two angles are complementary. the large angle is 36 more than the smaller angle. what is the measure of the large angle?

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.