​ Enter an equation that represents this scenario in the box.

4x+y

the number of bacteria after  0  hours   =   250

the number of bacteria after  1  hour   =   250 * 4

the number of bacteria after  2  hours   =   (250 * 4) * 4

the number of bacteria after  3  hours   =   ( (250 * 4) * 4 ) * 4   =   250 * 4 * 4 * 4   =   250 * 4³

the number of bacteria after  x  hours   =   250 * 4^x

y   =   250 * 4^x