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Express the ratio below in its simplest form.

3.5:4.5

7/9

Step-by-step explanation:

35/10:45/10=35/10*10/45=35/45=35:5/45:5=7/9

or

3.5/4.5=(3.5*2)/(4.5*2)=7/9

$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)