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Sally can paint 90 ft\(^2\) of wall per hour.

1. Write a linear function that describes how many square feet of wall she can paint over time.
2. Make a graph to show how many square feet she can paint over the first 4 hours.

Answer :

Answer:

Hello...

Hello...Sally can paint a house in 4 hours; Which means in 1 hour she can paint 1/4th of the house.

Hello...Sally can paint a house in 4 hours; Which means in 1 hour she can paint 1/4th of the house.John can paint the same house in 6 hours. Which means in 1 hour she can paint 1/6th of the house.

Hello...Sally can paint a house in 4 hours; Which means in 1 hour she can paint 1/4th of the house.John can paint the same house in 6 hours. Which means in 1 hour she can paint 1/6th of the house.Together in 1 hour they can paint: - 1/4 + 1/6 = 5/12th of the house.

Hello...Sally can paint a house in 4 hours; Which means in 1 hour she can paint 1/4th of the house.John can paint the same house in 6 hours. Which means in 1 hour she can paint 1/6th of the house.Together in 1 hour they can paint: - 1/4 + 1/6 = 5/12th of the house.Total Hours for painting the house together will be 12/5 = 2.4 Hours.

hope it helps

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Rewritten by : Barada

The linear function that describes how many square feet of wall she can paint over time is y = 90x.

What are linear equations?

Each term in a linear equation has an exponent of 1, and when this algebraic equation is graphed, it always produces a straight line. It is called a "linear equation" for this reason.

Both linear equations with one variable and those with two variables exist.

Given the area painted by Sally in one hour = 90 square feet

so from the given data, we can find that the area painted by Sally is directly proportional to the time,

let she paint for x hours and the area she painted be y,

the equation for the condition is y = 90x,

where x is in hours and y is in square feet,

Table for the area she painted in first 4 hours

x(hours) 1 2 3 4

y ( sq. feet) 90 180 270 360

The graph for the first four hours is attached.

Hence the equation is y = 90x.

Learn more about linear equation;

https://brainly.com/question/29739212

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