Sarah wants to buy a TV and a VCR. The store she visits has 7 different kinds of TVs and 4 different kinds of VCRs. How many possible combinations of a TV and a VCR does Sarah have to choose from? a.4
b.7
c.11
d.28

Franco wants to double the volume of the cone. what should he do?

Astandard american eskimo dog has a mean weight of 30 pounds with a standard deviation of 2 pounds. assuming the weights of standard eskimo dogs are normally distributed, what range of weights would 99.7% of the dogs have? approximately 26–34 pounds approximately 24–36 pounds approximately 28–32 pounds approximately 29–31 pounds

Kelly is a salesperson at a shoe store, where she must sell a pre-set number of pairs of shoes each month. at the end of each work day the number of pairs of shoes that she has left to sell that month is given by the equation s=300-15x , where s is the number of pair of shoes kelly still needs to sell and x is the number of days she has worked that month. what is the meaning of the number 300 in this equation