You buy 2 gallons of milk at $3.29/gallon, 4 gallons of ice cream at $3.59/gallon, and 5 lbs of strawberries at $0.72/lb. food sales tax is 3.75%. what is your total cost?

Hi There!

Solution +

2 gallons of milk: 3.29 * 2 = $6.58

4 gallons of ice-cream: 3.59 * 4 = $14.36

5 pounds of strawberries: 0.72 * 5 = $3.60

Total price before tax: 6.58 + 14.36 + 3.60 = $24.54

Tax: 24.54 * 0.0375 = $0.92025

Total price after tax: 24.54 + 0.92025 = $25.46025

Round: 25.46025 = $25.46

Hope This Helps :)

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)