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Arada [10]
3 years ago
11

Need halp fast

Mathematics
1 answer:
DENIUS [597]3 years ago
7 0

Answer:

Step-by-step explanation:

13.

6 =x − 24

Collecting like terms

6 + 24 = x

x = 30

14.

10 +w/3 = 2

Multiply each term by 3

30 + w = 6

Collecting like terms

w = 6 - 30

w = -24

15.

13 = −11 − 4x

Collecting like terms

4x = -11 - 13

4x = -24

Dividing by 4

4x/4 = -24/4

x = -6

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evablogger [386]
Alright, so you have the basic formula- good.
You have the A value (400), the interest rate r (7.5% -> .075 in decimal), and the final P value (8500). So, we only need to solve for t.

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logarithms are the inverse of exponents, basically, if you have an example like
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Makes sense if you consider a power of ten.
1000 = 10^3
if you put logbase10(1000), you'll get 3.
Anyways, though, to solve the problem make a log with a base of 1.075 in your calculator
log21.25(base 1.075) = t
also, because of rules of change of base (might want to look this up to clarify), you can write this as log(21.25)/log(1.075) = t
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