Set up and solve a system of equations to solve the problem. Helene invested a total of $1,750 in two simple-interest bank accounts. One account paid 4% annual
interest; the other paid 8% annual interest. The total amount of interest she earned after 1 year was $90.
Find the amount invested in each account.
Helene invested $
in the 4% Interest account and $
in the 8% account.

the direct variation says that:

then the equation is of the form is given by:

            where k is the constant variation.

from the given table:

consider any value of x and m(x)=y

x = 2 and m(x)=y = 3

substitute these value in [1]; we have;

divide both sides by 2 we get;

⇒

check:

put x = -1 and m(x) = -1.5

substitute in the equation:

-1.5 = -1.5                   true

therefore, the function m(x) represents a direct variation

graph of this function as shown below:

idk

step-by-step explanation:

13664

step-by-step explanation:

=cross multiply

=100 x = 13664