Question

For the graph below, what should the domain be so that the function is at least 300?

graph of y equals minus 2 times the square of x plus 50 times x plus 300

x ≥ 0

-5 ≤ x ≤ 30

0 ≤ x ≤ 25

all real numbers

Answer 1

@study100

Answer 2

y=-2x^2 +50x+ 300

I'm assuming 1st one since y = 300 at x = 0 and y = 68 at x = -1

Answer 3

Just plugging in -5 and the answer is negative. Cannot be all real numbers since it also includes negative numbers.