Answer:
A
Step-by-step explanation:
Exponential graphs are a curve that approaches the x-axis unless a value has been added or subtracted to it. In this graph, the curve approaches the x-axis. This means 100 has NOT been added or subtracted. Instead it is the initial value meaning it has been multiplied to it so when x= 0 y= 100. This occurs because any base to a zero exponent is 1. So 100*1 = 100.
The curve is also decreasing meaning the base is less than 1. So the ase must be 2/5 or 3/5. Thus only A or D are options.
To determine, plug (1,60) into the equations and see if they work.
When x = 1, then y = 100 * 3/5 =300/5 = 60.
So A is the solution.
