Answer:
25% ; 400%
Step-by-step explanation:
There are going to be 10 cupcakes left,hope I helped (:
The vertex is the highest point on a downward-opening parabola or the lowest point on an upward-opening parabola.
Answer:

Step-by-step explanation:
Cosine is the ratio of the side adjacent to the angle and the right triangle hypotenuse.
B =
= 
x = 40/2 = 20 i think thsts the answer if I was wrong you have to right to slap my face