Which of the following are irrational numbers?

A. - 4

B. 3/13

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C ...21

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D. / / 2

Avery has a total of $12.50 in her piggy bank at home. Each week she takes out $1.25 to ride the city bus. Write an equation representing the balance, C, in the piggy bank, where w is the number of weeks.

3y squared plus 14y plus 8

The perimeter of a rectangular sheet of metal is 120 feet, and the area is 800 square feet. The length and width of the rectangular sheet of metal are each multiplied by 6. What is the perimeter of the new sheet?

Is 4/16 equivalent to. 25 if so why?

What is the highest number in the world and what is the lowest number in the world explain your answer

At Teresa's auto shop, it takes her 15 minutes to do an oil change and 18 minutes to do a tire change. Let x be the number of oil changes she does. Let y be the number of tire changes she does.

Which expression gives the volume of a sphere with radius 5

A mine produces 42.5 tons of coal per hour. how much coal will the mine produce in 9.5 hours?

C (n) = -9/2 (-4/3) ^n-1 What is the 2nd term in the sequence?

How much simple interest is earned on investment of $1250 if the money is invested for five years at an annual interest rate of 4.5%