What is the range of the following graph? Plss it would mean a lot if you guys could help!

The product of two negative rational numbers is always zero sometimes zero never zero

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?

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)