Write an inequality and use substitution to solve the following problem: chris has 45 dollars saved up. he currently makes 5 dollars each day walking dogs. chris wants to purchase a new stereo for 72 dollars. which of the following numbers of days worked will allow chris to purchase the stereo?

5.4 days (6 days)

Step-by-step explanation:

First set up an equation. (x represents days)

5 dollars a day = 5x ; Already has 45 = +45 ; Needs 72 = =72

That means your equation is...

5x + 45 = 72

Now solve for x.

5x = 27          Subtract 45 from both sides.

x = 5.4          Divide both sides by 5.

This means he will have to work for at least 6 days.

I hope this helped. :)   (I love these kinds of problems!)

g = (2, 2)

step-by-step explanation:

given the ratio is 1 : 1 then f is the midpoint of eg

let the coordinates of g = (x, y)

using the midpoint formula

(0 + x) = 1 ( multiply both sides by 2 )

0 + x = 2 ⇒ x = 2

similarly

(4 + y) = 3 ( multiply both sides by 2 )

4 + y = 6 ( subtract 4 from both sides )

y = 2

coordinates of g = (2, 2)