Julia owns a coffee shop. she experimented with mixing city roast colombian coffee that costs $7.80 per pound with french roast colombian coffee that costs $8.10 per pound to make a 20-pound blend. her blend should cost her $7.92 per pound. how much of each type of coffee should she buy?

Astudent received the following grades last semester. find the student's semester grade point average. an a is algebra (3 credits), a b in history ( 3 credits), a in sociology ( 3 credits) a d in english ( 3credits) and a c in seminar ( 2credits). an a is worth 4 points, a b is worth 3 points a c is worth 2 points and a d is worth 1 point.

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.

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'