A 880-foot tree has grown at a constant rate each year. In the equation below, t is the age of the tree in years.

20t = 880

5. What is the radius and center of the circle given by the equation (x+12) ^2 + (y-4) ^2=81?

Olga runs a business out of her home making quilts. Each month she has fixed costs of $350. In addition, for each quilt she makes, she incurs an additional cost of $8.75. If her total costs for the month were $560.00, how many quilts did she make?

Which set of numbers can represent the side lengths, in millimeters, of an obtuse triangle? A. 8, 10, 14 B. 9, 12, 15 C. 10, 14, 17 D. 12, 15, 19

laura goes shopping she spends one fourth of her money on a pair of shorts and one third of her remaining money on a belt if laura has $42 dollars left after these two purchases how much money did she have when she started shopping?

Kimberly wanted to buy a new cell phone that cost $599.95 she walked until they went on sale for 35% off. What is the discounted price of Kimberly's phone?

A newspaper reporter wants to know how popular the hobby of bird watching is in the city. He asked people at the local bird refuge if they watched birds as a hobby. Which of the following best explains whether the reporters data is valid or not?

I am very confused on how to figure out if y = 3/4x is proportional?

Alison wants to buy a mountain bike for $339.12. If she saves $28.26 each month, in how many months will she be able to buy the bike?

At 12 o'clock the temperature was 7°C. The temperature decreased by - 20°C. What is the new temperature?

Ashleys rentals charges $27.50 per hour to rent a surfboard and a wetsuit. Darlas surf shop charges $23.25 per hour to rent a surfboard plus $17 extra for a wetsuit.