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rodikova [14]
3 years ago
5

Julia and Rodney decided to invest 15% of their salaries.The table shows their principal balance,interest rate,and type of inter

est.Based on the table,what is the sum of the interest they earned after 3 years?
*Imagine the table like this*
They both have $4500 as their principal balance.One of them has their interest type as compounded annually and the other is simple interest.The interest rate for both is 6%.

A- $1669.57
B- $4050
C- $1620
D- $4368.94
Mathematics
1 answer:
Masja [62]3 years ago
6 0
On the account with interest compounded annually, the account balance will be
  P*(1 +r)^t
  4500*1.06³ = 5358.57
so the interest earned will be
  5358.57 -4500 = 859.57

On the account with simple interest, the interest earned will be
  I = Prt
  I = 4500*.06*3
  I = 810.00

The total interest earned on the two accounts will be
  $859.57 +810.00 = $1669.57 . . . . . . . . selection A
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3 years ago
What is the zero of the following function, f(x) = –(2/7) x − 10? ​
Stels [109]

Answer:

Step-by-step explanation:

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7 0
3 years ago
I need help with this, please. Any advice would be appreciated.
mote1985 [20]

Answer:

see explanation

Step-by-step explanation:

The sum to n terms of an arithmetic sequence is

S_{n} = \frac{n}{2} [ 2a₁ + (n - 1)d ]

where a₁ is the initial value and d the common difference

Given

S_{n} = \frac{n}{2} [ 10 + (n - 1)3 ]

Then by comparison

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a₁ = 4 ← initial value

and d = 3 ← common difference

Thus

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8 0
4 years ago
Find the equation of the line containing (3,-2) and (5,5).
Mars2501 [29]

Answer:

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Step-by-step explanation:

First, find the slope using rise over run (y2 - y1 / x2 - x1) with the 2 points:

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= 3.5

Then, plug the slope and a point into y = mx + b to solve for b:

y = mx + b

5 = 3.5(5) + b

5 = 17.5 + b

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Plug the slope and the y intercept into the equation y = mx + b

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3 years ago
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