PLEASE SOMEONE HELP IM STUCK ON THIS QUESTION There are 76 students in the Frederick Middle school chorus. The number of girls in the chorus is 13 more than twice the number of boys. (A) write an expression to represent the number of boys and an expression to represent the number of girls using the variable b to represent the number of boys.

(B) write an equation to represent this situation

(C) use the expression to determine the number of boys and the number of girls that belongs to the chorus.

idk

step-by-step explanation:

delaney would like to make a 5lb nut mixture that is 60% peanuts and 40% almonds.

she has several pounds of peanuts and several pounds of a mixture that is 20% peanuts and 80% almonds.

let 'p' represent the number of pounds of peanuts needed to make the new mixture, and  

let 'm' represent the number of pounds of the 80% almond-20% peanut mixture.

:

p + m = 5

therefore

m = (5-p)

write an equation based on the percent of peanuts

1p + .2m = .6(5)

replace m with (5-p)

p + .2(5-p) = .6(5)

p + 1 - .2p = 3

p - .2p = 3 - 1

.8p = 2

p = 2/.8

p = 2.5 lbs of peanuts required

then

5 - 2.5 = 2.5 lbs of the peanut/almond mixture required

:

a) what is the system that models this situation?

p + m = 5

1p + .2m = .6(5)