Wich property is shown in this example [4.5+3.4]+2.3=4.5+[3.4+2.3]

I would say associative property of multiplcation

Step-by-step explanation:

Your just switching the parenthesis to a different set of numbers you arent changing the order of the numbers and they have multiplying signs inside the parenthesis

$53.50

step-by-step explanation:

you have to subtract the amount of money chuck earned ($72.50) by the cost of the gas for the mower ($11.25) and the new string for the trimmer he bought ($7.75).

72.50-11.25=61.25

and then subtract $61.25 by the second thing he bought (the new string for the trimmer)

61.25-7.75=53.5

so in total it's $53.50 (53 dollars and 50 cents)

the answer is b.

step-by-step explanation: