Brian has 250 coins in his piggy bank. Some of the coins are quarters and the rest are nickels. If the total value of the coins is $28.70, find the number of nickels in the piggy bank.

A 24-fl-oz jar of spaghetti sauce sells for $2.69. another jar that holds 1 quart of sauce sells for $3.29. which is better buy

32=2 to the what power

True or false the messure of an obtuse angle is greater than the measure of a right angle

You have a set of 10 cards-five red and five blue. Each group of five colored cards is numbered one through five. What is the probability of drawing a red four and then a blue four, while replacing the card between the drawings?

Casey and her sister Bozo cookie dough as a school fundraiser Casey's k tubs of cookie dough her sister sold three times as many tubs of cookie dough if they sold a total of 88 tubs of cookie dough then how many tubs of cookie dough did Casey sell,

Suppose 2kg of a radioactive substance decays to 250g in 75years. what is the half-life of the substance?

A group of 137 tourists are going on tour. The tour guide rents 15 vans. Each van holds 9 tourists. Did the tour guide rent enough vans?

Felicia's pets eat thirty pounds of food in two weeks. How many pounds of food would they eat in 5 weeks?

Jake bought 4 1/2 pounds hamburger for the cook out. How much did it cost him if hamburger is $1.80 per pound

The ordered pairs (1,16) (2,16) (3,32), (4,32) and (5, 48) represents the cost of buying various numbers of CDs through a music club. Identify the domain and range of the relation. Is the relation discrete or continuous? Is the relation a function?