An arrow is shot upward with an initial velocity of 64 feet per second. The height of the arrow h(f) in terms of the time since the arrow was released is h(f) = 64t - 16r^2. Name the axis of symmetry and the vertex.

answer: 180

step-by-step explanation:

12-2=10

20-2=18

10x18=180

the answer is a

step-by-step explanation:

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18