Raina's coffee shop makes a blend that is a mixture of two types of coffee. type a coffee costs raina $4.40 per pound, and type b coffee costs $5.80 per pound. this month, raina made 171 pounds of the blend, for a total cost of $856.00 . how many pounds of type a coffee did she use?

An episode of a television show is 60 minutes long when it originally airs with commercials. on a dvd without commercials, the episode is only 417 minutes long. how many1-minute commercials did the episode include when it originally aired? write and solve an equation to justify your answer.

Anew shopping mall is gaining in popularity. every day since it opened, the number of shoppers is 5% more than the number of shoppers the day before. the total number of shoppers over the first 10 days is 1258 how many shoppers were on the first day?

Abcd is a square. what is the measure of angle bac