What are the constants in this expression?
X-3+2/3-y/2

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

The chs baseball team was on the field and the batter popped the ball up. the equation b(t)=80t-16•16+3.5 represents the height of the ball above the ground in feet as a function of time in seconds. how long will the catcher have to get in position to catch the ball before it hits the ground? round to the nearest second

[15 points, algebra 2]simplify the complex fraction and find the restrictions.