Ms. Hills went to the store with $70. She bought three notebooks for $5 each and is buying a certain number of calculators for $25 each. Which of the following inequalities could be used to calculate the number of calculators she can buy?

33% of college students say they use credit cards because of the rewards program. you randomly select 10 college students and ask each to name the reason he or she uses credit cards. find the probability that the number of college students who say they use credit cards because of the rewards program is (a) exactly two, (b) more than two, and (c) between two and five inclusive. if convenient, use technology to find the probabilities.

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

The areas of two similar triangles are 72dm2 and 50dm2. the sum of their perimeters is 226dm. what is the perimeter of each of these triangles?