You are part of a school team planning a charity dog wash. You want to use data from last year's dog wash to predict how long it will take to wash a dog this year.

Last year's dog washing team kept track of how long it took to wash each dog. It took the team 15 minutes, 20 minutes, 10 minutes, 18 minutes, and 25 minutes to wash the dogs that came in the morning. In the afternoon, four more dogs came to get scrubbed clean. It took the team 10 minutes, 12 minutes, 30 minutes, and 13 minutes to wash these dogs.

Find the mean of the washing times and find the mean absolute deviation of the washing times. If necessary, round to the nearest tenth.

step-by-step explanation:

coldest temperature they recorded add me europa2433

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step-by-step explanation:

answer: c, the green line

step-by-step explanation:

there is no black line, eliminate b.

simple interest implies periodic payments, but the red line shows no payments, eliminate d.

simple interest has equal payments. if paid say every day, the graph is about a straight line (actually a stairstep).

the yellow line is not straight, eliminate a.

check: the green line is straight, answer is c.

simple interest with positive interest rate gives a straight line sloping up to the right. green line:

g(t) = $100 + ($200-$100) ÷ (20 years) × (t years)

= $100 + (4%/year) × ($100)(t years)

incidentally, the yellow line curving upward represents continuously compounded interest

y = $100 × 2^(t years / (14 assuming the yellow line hits $200 at 14 years. 2^0 is 1, so y(0) = $100; 2^(14/14) is 2, so y(14) = $200.