Plz ! the graph above shows 3 enzymes and their activity at different ph levels. what is the optimal ph for the enzyme salivary amylase? use evidence from the graph to support your answer.

What is the y intercept of f(x)=(1/2)^x?

What is the domain of the given function? {(3,-2), (6, 1), (-1, 4), (5,9), (-4, 0); o {x | x= -4,-1, 3, 5, 6} o {yl y = -2,0, 1,4,9} o {x|x = -4,-2, -1,0, 1, 3, 4, 5, 6, 9} o y y = 4,-2, -1, 0, 1, 3, 4, 5, 6, 9}

Which expression is a perfect cube? a. x8 b. y24 c. m28 d. x64