What is the interquartile range of the following data set? 78,90,456,676,111,381,21

1/4 (n + 2) = 7, what is n?

Write six hundred eight thousandth in decimal form

14x+10y=72 14x+4y=96 Solve the following system of equations using any method

Two thirds of a number reduced by 11 is equal to 4 more than the number. Find the number

A baseball diamond measures 29 meters along each side. If a batter hit 3 doubles in a game, how many kilometers did the batter run?

How do you graph (y=-1/2x-1) (y=-3x+4)

A motorboat travels 448 kilometers in 8 hours going upstream and 516 kilometers in 6 hours going downstream. What is the rate of the boat in still water and what is the rate of the current?

Jack made 50% more smoothies than yesterday. If he made 30 smoothie today how many did he make yesterday?

Mr. Ramirez has enough money to fence one of his rose gardens, how many feet of fencing will he need if both gardens have the same perimeter

David saves $175 each month for the first 5 months. Then he saves $225 each month for the next 5 months. What is the average amount that David saves each month