I need help with my khan, plz help me (7th-grade math)

The equation is ⇒ 7( x - 0.75 ) = 2.8

The normal price of one cookie = $1.15

Step-by-step explanation:

Let the normal price is x

So, the cost of cookie today is x - 0.75

The price of 7 of them will be $2.8

So the equation will be:

7( x - 0.75 ) = 2.8

Solve for x:

x - 0.75 = 2.8/7 = 0.4

x = 0.4 + 0.75 = 1.15

1. 22

2. 1

3. 7

4. 18

step-by-step explanation

e2020 got it right

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.