An element with a mass of 680 grams decays by 27.7% per minute. To the nearest
minute, how long will it be until there are 2 grams of the element remaining?

10

Step-by-step explanation:

When you collect like terms ,

7 Will be transferred to the right  

3x =37-7

3x = 30

Divide both sides by the coefficient of x(3)

3x/3 =30/3

x =10.

Step-by-step explanation:

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.