Math Problem - Algebra?

Question

Don cuts grass for a summer job. He chages $10.00 a job plus $7.50 an hour. Find an equation for the Cost ($) of Don's cutting vs the Time (h). Use your equation to find the cost if the job takes 3 3/8 hours.

Any help is appreciated. Thank-you.

Answer 1

cost(h) = $10.00 + $7.50 * h

When h=3 3/8,

cost(3 3/8) = $10.00 + $7.50 * (3 3/8)
cost(3 3/8) = $10.00 + $7.50 * 3.375
cost(3 3/8) = $10.00 + $25.3125
cost(3 3/8) = $35.3125

Rounded off to the nearest penny, it's $35.31

Answer 2

Total cost = $10.00 + $7.50T
where T = Time job takes
For a 3 3/8 hours
Total Cost = $10.00 + ($7.50 x 3 3/8)
= $35.31

Answer 3

I understand your problem this way: a 3 3/8-hr job costs $10 and every hour in excess costs $7.50.

$=10 + [7.5 * (h - 3 3/8)]

Answer 4

cost = 7.5 * T + 10
cost = 7.5 * (3 3/8) + 10
cost = $35.3125

Answer 5

for 1 hrs, cost = 10 + (7.5)(1)
for 2 hrs, cost = 10 + (7.5)(2)
for 3 hrs, cost = 10 + (7.5)(3)
...........
..........
..........
for t hrs, cost = 10 + (7.5)(t)
.......

so equation is

........................(cost) = (10) + (7.5)(time)

so at t = 3 3/8 = 27/8=3.375
cost = 10 + (7.5)(3.375)
,,,,,,,,= 10 + 25.3125
............cost = 35.3125 $ for time = 3 3/8