a radioactive substance is decay exceptionally at a continuous rate such that it loses 40% of the original amount in 4 years. What percent of the original amount is left in 2 years

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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.

i need a diagram

step-by-step explanation:

no