Find the area enclosed by the x-axis and the curve x = 4 + et, y = t − t2.

After t seconds, a ball tossed in the air from the ground level reaches a height of h feet given by the equation h = 144t-16t^2. after how many seconds will the ball hit the ground before rebounding?

Check all that apply. f is a function. f is a one-to-one function. c is a function. c is a one-to-one function.

Out of $20$ creepy-crawly creatures in a room, $80\%$ are flies and $20\%$ are spiders. if $s\%$ of the total legs belong to spiders, what is $s$?