The vertex form:

(h,k) - the coordinates of the vertex

The coordinates of the vertex are
(-4,13).
Answer:
$43.70
Step-by-step explanation:
90.50 - 4 = 87.50
87.50 ÷ 2 = $43.70
¯\_(ツ)_/¯
Should be chosen the bigger propability
0,6>0,4
The answer to this equation is 1/2