An investment service promises to double your money in 8 years. Assuming continuous compounding of interest, what rate of interest is needed? Links and absurd answers WILL be reported. Thank you!

Each month, a shopkeeper spends 5x + 14 dollars on rent and electricity. if he spends 3x−5 dollars on rent, how much does he spend on electricity? for which value(s) of x is the amount the shopkeeper spends on electricity less than $100? explain how you found the value(s).

After t seconds, a ball tossed in the air from the ground level reaches a height of h feet given by the equation h = 144t-16t^2. after how many seconds will the ball hit the ground before rebounding?

If f(x) = 2x + 8 and g(x) = x4, what is (gº)?