Last year, Eric had $30,000 to invest. He invested some of it in an account that paid 10% simple interest per year, and he invested the rest in an account that paid 9% simple interest per year. After one year, he received a total of $2710 in interest. How much did he invest in each account?
Note that the ALEKS graphing calculator can be used to make computations easier.
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5
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First account: si
Second account: $0

im not sure but thanks for the points

Step-by-step explanation:

here you go!

Step-by-step explanation:

Since time is one year in I = prt then the options below can be used

If you've had Algebra you can use Systems of Equations to solve this problem

x + y = 30,000  for the parts of the Principal

.09x + .08y = 2420  For the rates and total Earnings

Or you can use a substitution knowing your Principal, Rates and Total Earnings

Remember to write the rates as decimals.

First you can put everything in terms of x as follows

x + y = 30,000

y = 30,000 - x

y can be rewritten as 30,000 - x

Using the rates to total earnings we have

.09x + .08(30,000 - x) = 2420

Then just solve for x.

walter needs to make at least 5 more cookies but no more than 40. 5 ≥ x ≥ 40;

step-by-step explanation:

walter has to make a minimum of 20 cookies. he already has 15 cookies made, so he must make 5 more to meet the minimum.

the maximum amount of cookies he can make is 55. he already has 15, so he has to make no more than 40 more cookies to meet the maximum.