The graph shows the amount in Mike's savings account. if Mike continues to deposit the same amount each week, which equation could be used to find when his account balance will be $160 A. 160 = 40 + 10x
B. 160 = 40x - 10
C. 40 = 160 + 10x
D. 40 = 160x - 10

the answer is 2/54

step-by-step explanation:

16

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)

you have to find the same variables -3n - 5n so this would be -3n +(-5n) which equals -9n