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Crank
3 years ago
9

Oceanside Bike Rental Shop charges $16 plus $6 an hour for renting a bike. Melanie paid $64 to rent a bike. How many hours did s

he pay to have the bike checked out?
Mathematics
2 answers:
hoa [83]3 years ago
8 0

Answer:

Melanie payed for 8 hours to have the bike checked out.

Step-by-step explanation:

You just have to do the opposite steps shown in the problem, but you have to  subtract the $16 fee from $64 first.

$64-$16= $48

$48 divided by $6 = 8 hours

I hope this helps!

Elanso [62]3 years ago
4 0

Answer:

This is a linear equation.

y = mx+b

y is the total cost.

The slope m is the rate: that's 9 dollars per hour.

x is the number of hours.

b is the initial value: that's 16 dollars.

y = 9x+16

The problem states that the cost was 79 dollars.

Substitute that for y and solve for x.

79 = 9x+16

63 = 9x

x = 7 hours

Step-by-step explanation:

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Carlos deposited $7,924 into a savings account 30 years ago. The account has an interest rate of 4.6% and the balance is current
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Answer:

n = 1, this means the interest compounds ANNUALLY.

Step-by-step explanation:

Carlos deposited $7,924 into a savings account 30 years ago. The account has an interest rate of 4.6% and the balance is currently $30,541.83. How often does the interest compound?

Compound Interest Formula

: A = P(1 + r/n)^nt

A = Amount after time t

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A = $30,541.83

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Hence,

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Divide both sides by 7924

$30,541.93/$7924 = (1 + 0.046/n)^30n

$30,541.93/$7924 = (n + 0.046/n)^30n

3.8543576477 = (n + 0.046/n)^30n

We take the logarithm of both sides

log 3.8543576477 = log (n + 0.046/n)^30n

Solving for n,

n = 1

Therefore, from the calculation above, since n = 1, this means the interest compounds ANNUALLY.

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