A gardener need 20% nitrogen in his fertilizer. If he has 1000 gallons of fertilizer at 12% nitrogen, how much nitrogen will he have to add

Giuseppi's pizza had orders for $931.00 of pizzas. the prices were $21 for a large pizza, 514 for a medium pizza, and $7 for a small pizza. the number of large pizzas was two less than four times the number of medium pizzas. thenumber of small pizzas was three more than three times the number of medium pizzas. how many of each size of pizza were ordered?

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?

Which word in the sentence below is an interrogative pronoun? who is picking us up from school? whousisfrom