Help me pls

Each bag covers 21.09 square feet

Step-by-step explanation:

So first you need to find out how many bags he bought you do this by taking the total cost 101.66 and dividing that by 4.42 which was the cost of each bag to get the total number of bags, once you do that you will get 23. Now that you have the number of bags you can take the total square feet and divide it by the number of bags once you do that you will get 21.08695652173913 and you go to the closest thousandths place

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a