During strenuous work a human body generates about 2,400 btus of body heat per hour. if 7 bodybuilders are in a gym that is 20 ft × 25 ft × 12 ft lifting weights, how many btus per cubic foot do they produce in 3 hours? (to the nearest tenth) a) 2.8 btus/ft3 b) 8.4 btus/ft3 c) 33.7 btus/ft3 d) 100.8 btus/ft3

4a. is 3 miles every hour

4b. is 1/3 of an hour per mile

step-by-step explanation:

the final amount you will pay is $68.04.

the tip is determined by the pre-tax amount, so we calculate the tip based on the original bill, not after we've added sales tax.

to find the tip:

we can divide 54.00 by 100 to get 1% of 54. then we multiply that by 18.

54 / 100 = .54

.54 x 18 = 9.72

tip = 9.72$

to find the tax:

we can divide 54.00 by 100 to get 1% of 54. then we can multiply that by 8 to get 8%.

54 / 100 = .54

.54 x 8 = 4.32

tax= 4.32

now we can add the tip and tax to the bill to get our total.

54 + 9.72 + 4.32 = 68.04

total: $68.04

step-by-step explanation: