1. If mei has earned 30 points, right and solve a multiplication equation to find how many more book she needs to read. 2. Suppose mei read seven books. Right and solve a division equation to find the number of points she has earned.
•Reading reward•
•50points=pizza party•

Item read points
—————
Book 5
Magazine 1
Newspaper. 1

Pyramid shown has a square base that is 18 inches on each side has a surface area of 164 square inches what is the slant height

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.

In the diagram, a building cast a 35-ft shadow and a flagpole casts an 8-ft shadow. if the the flagpole is 18 ft tall, how tall is the building? round the the nearest tenth.