The vertex of this parabola is at (1,3). which of the following could be its
equation?
(1,3) oc
o a. x=3(y - 3)2+1
o b. = 3(y - 3)2-1
o c. y = 3(x + 1)2-3
d. y = 3(x + 1)2 + 3

A. x = 3 (y - 3)² + 1

Step-by-step explanation:

parabora open toward left or right with vertex (h,k)

x=a(y-k)²+h

h=1

k=3

x = 3 (y - 3)² + 1

d 600 because 15*10*2=300

300+300=600

step-by-step explanation: