Explain why any integers can be represented in a lot of ways

thank you

2x+3y=12 x-y=6 solve the following system equations

Apatient is given 50 mg dose of medicine the medicines effectiveness decreases every hour at a constant rate of 40% what is the exponential decay function that models this scenario how much medicine will be left in the patients system after 2 hours

Which of the following is true for the relation f(x)=2x^2+1