Which function represents a vertical stretch of an exponential function? fx)=3(1/2)x
f(x)=1/2(3)x
f(x)=(3)2x
f(x)=3(1/2x)

7friends share 4 pizzas equally how much pizza did each friend get

Can someone me and do the problem plz so i can understand it more better

Jacob signs up to work for 2 1/2 hours at the school carnival. if each work shift is 3/4 hour, how many shifts will jacob work? (i just want to double check : |, for anybody that responds! : )