Answer:
5
step by step explanation:
if she gets $10 off of her purchase that means she would have a little extra money to another shirt
The vertex is exactly half way between directrix and focus. In this case the vertex is (8,-7)
(h,k)
P is the distance between the vertex and either the directrix or focus, in this case p = 1.
a = 1/(4p) or 1/(4*1) or 1/4
write the equation in vertex form
y = a(x-h)^2 + k
y = 1/4(x-8)^2 -7
Answer:

Step-by-step explanation:





For the Interval 
Length of the Curve 
Using T1-Calculator

Answer:
(x+5)(x-9)
Step-by-step explanation: