9514 1404 393
Answer:
45
Step-by-step explanation:
The equation is that of a parabola in vertex form.
y = a(x -h)^2 +k
where 'a' is the vertical scale factor and (h, k) is the vertex.
Comparing this to the given function, you find ...
a = -5
h = 1
k = 45
The negative value of 'a' tells you the parabola opens downward, so the y-value of the vertex is the maximum value of the function: 45.
