21 is what percent more than 16

10. 4x - 7y = 3 x - 7y = - 15

Simplify the following expression: 2x+4y+6z+x+3y+7z

3x + 7 (x + 1) = 2 (6x + 5) - 2x

Bob spends $1,059.75 each month for rent and supplies to run her art studio. If she charges $24 for a painting, how many paintings must bob sell to cover her monthly expenses?

A heavy metal sphere with radius 10 cm is dropped into a rightcircular cylinder with base radius of 10 cm. If the originalcylinder has water in it that is 20 cm high, how high is the waterafter the sphere is placed in it?

When a feasible region is bounded on all sides, where will the maximum and minimum values of the objective function occur?

Convert 5,400 in to miles

A six sided number cube has faces with the numbers 1 through 6 marked on them. what is the probability that a number less than 2 will occur on one toss of the number cube

Amina sees a discount of 5% on a laptop. She can calculate the amount she has to pay for the laptop using the expression b - 5/100 b, where b is the price of the laptop before the discount.

When multiplying 1729 times 308, Clayton got a product of 53253. Without calculating does his product seem reasonable? explain your thinking