John has a jar with 100 marbles. The jar contains twice as many red marbles as yellow marbles, and three times as many green as yellow, and twice as many purple as

red. How many red marbles in the jar?

Solve the inequality 4|x+2|<=20

Three-fourths of a number increased by one-half is equal to fourteen. Find the number.

Andy has $1,500 and he invested in stock. On one day, his money was doubled. The next day he got a profit of $165 and later loss of $238. Write an expression for this and determine his present amount.

28.45 to the nearest tenth

If a triangle has sides that are 21 and 6 what is the range for third side x? Enter your answer without spaces in range format. Example: 1<x<3

Ken finished one-half of his homework problems at school. He finished two thirds of the remaining problems at home. He had 5 problems left. How many problems were there in total? A. 20 B. 25 C. 30 D. 40 E. 60

Akeem has 24 meters of rope. Which of the following lengths is equal to 24 meters? A 0.024 kilometers b 0.24 kilometers c 2.4 kilometers d 240 kilometers

X-intercept of the line whose equation is 8x+2y=4

If 400 reduced by two times my present age is 296, how old am I now?

Describe how to decide 64 is a prime number or composite number