Y=-16 when ×=-64 what is the equation

Aquantity with an initial value of 3900 decays exponentially at a rate of 35% every hour. what is the value of the quantity after 0.5 days, to the nearest hundredth?

You have 138.72 in your saving account u take out 45.23 and 18.00 you deposit 75.85 into your account

The graph of f(x) = |x| is transformed to g(x) = |x + 11| - 7. on which interval is the function decreasing?