David's cell phone company charges $0.45 for each text message plus a monthly fee of $50.00. he owes $91.40. write and solve an equation to find the number of text messages did david has?

$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)

rick would give her the best deal as he will charge $8.88 per hour