Martina's coffee shop makes a blend that is a mixture of two types of coffee. type a coffee costs martina $5.75 per pound, and type b coffee costs $4.10 per
pound. this month, martina made 140 pounds of the blend, for a total cost of $677.95. how many pounds of type b coffee did she use?
tumber of pounds of type b coffee:
x
5
?

Step-by-step explanation:

a + b = 140a = 140 - b

5.75a + 4.10b = 677.95

sub in 140 - b in for a in the other equationand solve for b, the number of lbs of type B coffee

5.75(140 - b) + 4.10b = 677.95

805 - 5.75b + 4.10b = 677.95

-5.75b + 4.10b = 677.95 - 805

- 1.65b = - 127.05

b = -127.05 / -1.65

b = 77 < lbs of type B coffee used

a + b = 140

a + 77 = 140

a = 140 - 77

a = 63lbs of type A coffee used

check..

5.75a + 4.10b = 677.95

5.75(63) + 4.10(77) = 677.95

362.25 + 315.70 = 677.95

677.95 = 677.95 (correct)

I found both just so I could check my answerand it checked out

describing distributions is one of the key skills you’ll need to earn a high score on the ap statistics exam. if you need proof of this, just flip through some past exam questions, which can be found at the collegeboard website. you’ll notice that the first free response question is almost always a question requiring you to look at a graph and describe it.

step-by-step explanation: just trying to get points sorry : (

$9.89

step-by-step explanation:

9.90 = p x .06 x .25 (3/12 changed to a decimal)

9.90 = p x 0.015

9.90 - 0.015 = p

9.89 = p