Abba grew 1 foot over the past year. He is now 5 feet tall. Part B: Use your model in Part A to write and solve a proportion to find the percent increase in Abba's height.

25%

Step-by-step explanation:

Abba grew 1 foot over the past year. He is now 5 feet tall. What was Abba's percent increase in height?

Step one:

given data

We are told that Abba grew 1 foot in the past year, and now he is 5 feet tall, this means that his previous height is 4 feet.

Step two:

We want to find the percent increase

%increase = change in height/ previous height *100

%increase =5-4/4*100

%increase = 1/41*100

%increase =0.25*100

%increase = 25%

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

step-by-step explanation:

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