Jon earns $180 per week plus $25 for each sale. write an inequality to represent how many sales he needs to make to earn at least $500.

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.

Aflower has 26 chromosomes. to create a new flower,how many would a sperm cell have what is called?

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.