The value of a computer decreases with its age, until it is worth nothing A computer that was purchased new (age 0 years) for $2200 is worth
$1540 after 6 years.
The value of the computer after 8 years is what?
After how many years will it be worth nothing?

Initially 100 milligrams of a radioactive substance was present. after 6 hours the mass had decreased by 4%. if the rate of decay is proportional to the amount of the substance present at time t, find the amount remaining after 24 hours. (round your answer to one decimal place.)

Astudent was asked to find the square of 7x+3. the student quickly wrote (7x+3)^3= 49x^2+9. identify the student's error and provide the correct answer.

What are linear equations? could'ya explain too me, ? ! and how do you see what graph is a proportional relationship?