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tekilochka [14]
3 years ago
11

An amount of $700 was invested at 7% for 7 months. What is the interest? Round your

Mathematics
1 answer:
Levart [38]3 years ago
7 0

Answer:

49 dollars

Step-by-step explanation:

700 times .07

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(a) Brenda saved $23.50.

(b) The rate at which Brenda is saving money is<u> 0.5 dollars per day</u>.

(c) money saved on J(14) is <u>$27.</u>

Step-by-step explanation:

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Initial amount in the jar is, J(0)=\$20

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Brenda is saving money at a linear rate.

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The rate of change of a function is given as:

Rate=\frac{f(x_2)-f(x_1)}{x_2-x_1}

Here, x_1=0,x_2=7, f(x_1)=J(0),f(x_2)=J(7)

Therefore, the rate at which Brenda saves money is given as:

Rate=\frac{J(7)-J(0)}{7-0}\\Rate=\frac{23.50-20}{7}\\Rate=\frac{3.5}{7}=0.5\ dollars/day

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A linear function is of the form f(x)=mx+b, where 'm' is the rate and 'b' is the initial value of the function.

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