What is the place for 4 in 400000

The Sunday school teacher gave 5 Friend's Day invations to each of her 19 students to give to their friends. She had 5 left over. How much invations did the teacher start out with?

What is 9/15 in simplest form?

A chemistry teacher is setting up a lab experiment for 19 lab stations. If each station requires 0.759 grams of potassium hydrogen how many grams does the teacher need for the 19 stations?

Y=-2x^2 - 8x - 12 put this into vertex form

Determine the solution set of (x + 2) ^2 = 36.

12 quarts - 8 cups = ? cups

A farmer planted corn in a square field. one side of the field measure 32 yards. what is the area of the cornfield? show your work.

Is 2^7 equal to 2 • 7? Explain.

Factor this expression completely and then place the factors in the proper location on the grid. x2 - 9

What are exponential functions