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

Question

Marie English

22 February, 06:34

+2

Answers (1)

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Yasmine Page · Answer 1

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

-2x^2 + 50x + 300 ≥ 300

-2x^2 + 50x ≥ 0

-2x^2 ≥ - 50x

x^2 ≤ 25x

x ≤ 25

Therefore, required domain is 0 ≤ x ≤ 25

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 300x _ 0-5 _ x _ 300 _ x _ 25all real numbers