Ivan had saved some quarters. He spent 50 quarters, which was 2/5 of the quarters he started with. How many quarters did he start out with?

Solve this system algebraically: y = x^2 + 4x - 1 and y = 3x + 1

3. A researcher wanted to find out whether higher levels of a certain drug given to experimental rats would decrease the time it took them to complete a given maze to find food. a.

18. Three girls are selling cases of popcorn to earn money for a band trip. In week 1, Emily sold 2 3/4 cases, Brenda sold 4 1/4 cases and Shannon sold 3 1/2cases.

Owen took a total of 24 quizzes over the course of 6 weeks. How many weeks of school will Owen have to attend this quarter before he will have taken a total of 32 quizzes? Solve using unit rates.

A family has two children. What is the probability that both are girls, given that at least one is a girl?

A pole 24 feet high has a shadow eight feet long. A nearby pole is 72 feet tall. How long is it's shadow?

Where did Jack Frost catch a cold?

What number is 140% of 82

What is 3m-7n=p for m

Sarah's online bank statement has a current balance of $234.45. Find her error and fix her registry so it will be correct. Transaction Description. Payment/Debit. Deposit/credit Balance Beginning balance. - - - - - $187.22 Early Bird Breakfast. $13.