Sarah and her mom are at the mall. they buy a shirt that cost $16, a belt that cost $8, and a dress that costb$22. to. find the total cost, sarah adds $16 and $8, and then adds that sum to $22. her mom adds $16 to the sum of $8 and $22. what property of addition are they using to find the total cost? what is the total cost?

The commutative property of addition I think

infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions