A circle has a diameter of 42 mm. What is the circumference of this circle? (use 22/7 for pi; show your work in numbers)

Suppose that the percentage change in demand is 10%, the price elasticity of demand is 1, and the price elasticity of supply is 2. What is the percentage change in the equilibrium price?

How can you tell that 32 and 95 are not prime numbers without finding their factors?

Find three consecutive odd integers such that the sum of the largest and twice the smallest is 25. If x represents the smallest integer, then which equation could be used to solve the problem?

What is the coefficient of - 10n+10-10

A sample of n = 25 n=25 diners at a local restaurant had a mean lunch bill of $16 with a standard deviation of σ = $ 4 σ=$4. We obtain a 95% confidence interval as (14.43, 17.57) (14.43,17.57).

What number has factors of 2 and 3 and multiples of 12 and 18

Lily goes car shopping and finds two cars. The first one burns fossil fuel, gasoline, that sells for $18,000. It will cost $100 each month to buy fuel and maintain this car.

3 x + 2y equals negative 2

Mrs. Smythe needs 54 buttons to make costumes for the school play. Buttons come on cards of 9 buttons each. How many cards of buttons should Mrs. Smythe buy? 9 45 7 6

Winston works 40 hours a week as a pharmacist. If he made $75,400 last year, how much was he paid per hour