Leah had $24. She bought 7 sharpies and was left with $10. How much did each sharpie cost?

Find the sum of 4x^{2} -4+6 and -7^{2} +3x+1

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.

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry