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

The interior angles formed by the side of a hexagon have measures of them up to 720° what is the measure of angle a

Estimate the area under the curve f(x) = 16 - x^2 from x = 0 to x = 3 by using three inscribed (under the curve) rectangles. answer to the nearest integer.

In a test for esp (extrasensory perception), a subject is told that cards only the experimenter can see contain either a star, a circle, a wave, or a square. as the experimenter looks at each of 20 cards in turn, the subject names the shape on the card. a subject who is just guessing has probability 0.25 of guessing correctly on each card. a. the count of correct guesses in 20 cards has a binomial distribution. what are n and p? b. what is the mean number of correct guesses in 20 cards for subjects who are just guessing? c. what is the probability of exactly 5 correct guesses in 20 cards if a subject is just guessing?