Four faces of a function graph, equation, table, description. over a ten-minute period the depth of water changes in a bathtub. sometimes the faucet is turned on and the bathtub fills up. sometimes the faucet is turned off and at other times the drain plug is pulled and water drains out. the x-axis represent the time in minutes and the y-axis represents the amount of water in gallons. answers

a. 19,958,400

step-by-step explanation:

hope this

70

step-by-step explanation:

2*5=10

4*15=60

60+10=

70

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)