Doughnuts are sold in bags and cartons. A bag holds 4 doughnuts and 10 doughnuts. Tom buys B bags of doughnuts and C cartons of doughnuts. He buys a total of T doughnuts. Write down a formula for T in terms of B and C.

What is the measure of one interior angle of a pentagon

According to a study conducted in 2015, 18% of shoppers said that they prefer to buy generic instead of name-brand products. suppose that in a recent sample of 1500 shoppers, 315 stated that they prefer to buy generic instead of name-brand products. at a 5% significance level, can you conclude that the proportion of all shoppers who currently prefer to buy generic instead of name-brand products is higher than .18? use both the p-value and the critical-value approaches.

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.