Please help me with this question

Mathematics

1 answer:

qwelly [4]3 years ago

5 0

Answer:

3n + 3

Step-by-step explanation:

Mia is correct

When n= 1 , 3n + 3 = 3*1 + 3 = 3 + 3 = 6

When n =2, 3n + 3 = 3*2 + 3 = 6 + 3 = 9

When n = 3 , 3n +3 = 3*3 + 3 = 9 + 3 = 12

When n = 4, 3n + 3 = 3*4 + 3 = 12 +3 = 15

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$2,500 for 25 years at<br> 2.75% annual simple<br> interest

xxMikexx [17]

Answer:

4,218.75

Step-by-step explanation:

Lets say that P is your starting principal (spelled -pal and not -ple, because Your Money is Your Pal), r is the interest rate (expressed as a decimal), and Y is the number of years you invest. Then your future value will be:

P (1 + rY) (Simple Interest)

P (1 + r)Y (Annually Compounded Interest)

Note the two formulas give the same answer for one year. After that, compound interest takes off.

3 0

3 years ago

If a rectangle is 2 meters more than its width, and the area of it is 80 square meters, what is the length and width?

bezimeni [28]

Ok I think it means that the length $l$ of the rectangle is 2 m more than is width $w$ ...
The area is A= $l*w=(w+2)*w=80$
so: $w^{2} +2w-80=0$
Solving this equation (using the quadratic formula) you get 2 solutons. The only acceptable is the positive one, i.e. $w=8 m$ , the length will then be $l=w+2=8+2=10m$ .