Luke puts $500 into a savings account that earns 6% simple interest each year. How much money will be in the account after 3 years

= $90

Step-by-step explanation:

I = prt

I = 500 x 0.06 x 3

I = $90

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  $590

Step-by-step explanation:

The account balance is given by ...

  A = P(1 +rt) . . . . simple interest rate r for t years

  A = $500(1 +0.06×3) = $590

There will be $590 in the account after 3 years.

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.