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omeli [17]
3 years ago
12

Write an equation for each word problem. Then solve.

Mathematics
2 answers:
Dmitry [639]3 years ago
5 0
1: (72-57)/3=5

2:(2,150-1,800)/35=10 those are the answers
Basile [38]3 years ago
4 0

1.

Let w be the number of weeks it takes for Konrad to have more than $72.

The equation we can derive is 57 + 3w > 72.

Then solve:

57 + 3w > 72

3w > 15

w > 5

Then w must be 6, which is the next number greater than 5.

2.

Let w be the number of weeks it takes Omar to have enough money for the car.

The equation we can derive is 1800 + 35w \geq 2150.

Then solve:

1800 + 35w \geq 2150

35w \geq 350

w \geq 10

Then w must be 10.

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You invests $1,400 in an account that pays an interest rate of 5.5%,combounded continoulsy.
Mrrafil [7]
Formula for compounding continuously is:

A = Pe^(RT)

A = Amount, P = Principal, e = constant ≈ 2.71828..., R = Rate per year,

T = Time.

A = ?, P = $1400, R = 5.5% = 5.5/100 = 0.055, T = 6 years.

 A = Pe^(RT)

A = 1400*(2.71828)^(0.055*6)        use a calculator.

A ≈ 1947.35

Amount or balance is  ≈ $1947.35

I hope this helps.
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