For the graph below, what should the domain be so that the function is at least 200?

graph of y equals minus 2 times the square of x plus 30 times x plus 200

-5 _ x _ 20
0 _ x _ 15
x _ 0
all real numbers

Step-by-step explanation:

Given is the graph with equation

This should be atleast 200 implies

This is the product of two numbers hence would be positive only if either both are positive or both are negative

Case I: Both positive .

Case II: Both negative

Then we get

This is inconsistent as a value cannot be less than 0 and greater than 15

So solution is

0 is less than or equal to x is than or equal to 15, B is the correct answer!