2. when joey dives off a diving board, the equation of his pathway can be modeled by h = -16t2 + 15t + 12.
a) find joey's maximum height.
b) find the time it will take for joey to reach the water.

see attached

step-by-step explanation:

given the function as;

write the equation replacing f(x) with y

form   and fill a table containing values of y with corresponding values of x

you can take a range for   values of x as -3≤x≤3

solving for x=-3

for x=-2

repeat the same procedure to get the values of y for the remaining ,x=-1 to x=3

plot the values of y against values   of x and obtain the following graph

step-by-step explanation:

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f(x) is   are being squared

g(x) is   increasing by 2

h(x) is adding .25 each time

k(x) is taking the square root

f(x) and k(x) are exponential functions

93-8=85

855=17

17*4=68

there are 68 purple marbles in that bag