The orderd pairs (164), and (5,81) represent a function. what is a rule that represents this function?
a. y=(5x)^2
b. x+11
c. y=x^5
d. y= (x+4)^2

The value, v, of kalani’s stock investments over a time period, x, can be determined using the equation v=750(0.80)^-x. what is the rate of increase or decrease associated with this account? 20% decrease 20% increase 25% decrease 25% increase