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3 years ago

WILL AWARD BRAINLIEST!!! there are 4 questions.

Mathematics

1 answer:

djyliett [7]3 years ago

4 0

Step-by-step explanation:

To solve these problems we will use these formulas

Compound interest is formula

A = P(1 +r)^t

A = final amount

P = initial principal balance

r = interest rate

t = number of time periods elapsed

The Simple interest formula is

A = P (1 + rt)

1. Compound interest

Principal p= $4000

Time t = 7years

Rate r= 2%= 2/100= 0.02

A= 4000(1+0.02)^7

A=4000(1.02)^7

A= 4000*1.1486

A=4594.74

the answer is

A. $4594.74

2. Simple interest

P= $10000

Rate r= 3.5%=3.5/100= 0.035

Time t= 7 years

A= 10000(1+0.035*7)

A= 10000(1+0.245)

A= 10000(1.245)

A= $12450

the answer is

B. $12450

3 compound interest

Given

Principal = $6000

Rate r= 6%= 6/100= 0.06

Time t =5 years

A= 6000(1+0.06)^5

A= 6000(1.06)^5

The answer is

A. 6000(1.06)^5

4. Simple interest

Principal p = $25000

Rate r= 2.75%= 2.75/100= 0.025

Time t= 1 year

A= 25000(1+0.025*1)

A= 25000(1.025)

A=$25625

She will earn interest of

25000-25625=$625 yearly

The answer is

B. $625

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