Y= -6x2 + 363 She defined the variables for us:
y= the height of the tennis ball in feet
x = seconds after the ball is hit with the
How long does it take for the ball to hit the ground in
seconds?
Hint: When the ball hits the ground, the height of the tennis
ball, y, is 0.

irrational, then, just means all the numbers that aren't rational. every integer is a rational number, since each integer n can be written in the form n/1. however, numbers like 1/2, 45454737/2424242, and -3/7 are also rational, since they are fractions whose numerator and denominator are integers.

step-by-step explanation:

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