Which is an irrational number?

A. 1

B. 80

C. 9

D. 49

A textbook costs 4 times as much as a novel. If the textbook cost $140, find the cost of the novel.

Write the subtraction problem for 838-462 and find the difference

Percent decrease 92; 69

How is 56.07 written as a mixed number with 100 as a denominator

Vida painted 4 rooms in 16 hours. Each room had 325 square feet of wall space that was painted. At what rate did Vida paint, in square feet per hour?

The price of a bicycle was increased from $300 to $450. A) What percent of the original price is the increase price. B) What percent of the increase price is the original price

A veterinary researcher takes an SRS of 60 horses presenting with colic. The average age of the 60 horses with colic is 12 years. The average age of horses seen at the veterinary clinic was determined to be 10 years.

Which ordered pair is the solution to y - x = 3 and 2x + y = 9?

Sally is interested in taking a job in a city which she's not familier with the cost of living. She is especially concerned about the cost of housing and is interested in the average cost of a three bedroom home.

A skating rink charges $0.75 to rent skates and $1.25 per hour to skate. How many hours did Penny skate if she was charged $4.50?