If the area of a circle is 81 pie What is the radius of the circle?

A savings account balance is compounded continuously. If the interest rate is 3.1% per year and the current balance is 1077.00 in how many years will the balance reach 1486.73?

What is three times three

3 friends split the cost of renting a boat. Each person rented a life preserver. The cost of the boat was $120. The total cost for the boat and life preservers was $135. Write and solve an equation to find the cost of renting a life preserver?

Mr. Piper's plumbing needed repairs. The plumber charged $98 for parts plus $45 per hour for labor. If the bill totaled $458 how many hours of labor were required?

A coach buys a uniform and a basketball for each of the 15 players on the team. Each basketball costs $9.40. The coach spends a total of $420 for uniforms and basketballs. Enter an equation that models the situation with u, the cost of one uniform.

Suppose you have an empty jar with a mass of 196.0 g. After filling the jar with jelly beans the mass of the jar + jelly beans is 323.8 g. If the average mass of a Jelly bean is 1.23 grams, estimate how many Jelly beans were added to the jar.

Can anyone simplify? - (2z + 3w - 5t) + 6 (4z - 8w + 2t)

What is the range of the function f (x) = 1/2sin (2x-pi)

Which of the following functions has an inverse that is not a function? y = x y = 2x + 1 y = x²

Which of the following is a factor of 3x3 + 18x2 + 27x? 9x x3 x + 3 x - 3