Laura wants to cover a box with fabric. What is the total surface area of the exterior of the box that Laura will cover? • The box is in the shape of a rectangular prism. • It measures 15 in. long, 11 in, wide, and 24 in. tall. A so in B) 100 in.2 © 789 in.2 1,578 in.2​

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.