What is c=2/pi r for r

One brand of popcorn costs $2.00 for 1 pound 9 pounds and the second brand costs $2.10 for one pound 14 ounces. Which is the better buy? Why?

A cone has a diamete of 3 inches the cone hold 12 cubic inches of water to the nearet inch what is the height of the cone

Ben has 30 pencils in a box. Each of the pencils is one of 5 different colors, and there are 6 pencils of each color.

Luna buys a shirt that costs $15.65. She gives the cashier $20 and receives $3.35 in change. What is the percent error in the amount of change she was given?

What is the result of factoring out the GCF from the expression (24+36)

A lunch counter sells two types of sandwiches, roast beef and chicken salad. The profit on the sandwiches is $2 for chicken salad and $3 for roast beef. The amount of bread available is enough for 30 sandwiches.

Evaluate the following expression 40 - 8 - 102

The value of a computer is $1200. It loses 20% of its value every year. Write a function the represents the value y (in dollars) of the computer after t years. The find the value of the computer after 5 years.

You spent $50 on supplies for the bake sale Each item sold for $2. After the sale, you had a profit of $180. How many items did you sell?

Which of the following is a term, variable, and expression? a. 21 b. ab c. 5x2 d. h