Amodel rocket is launched with an initial upward velocity of 138/fts. the rocket's height h (in feet) after t seconds is given by the following.
=h−138t16t2
find all values of t for which the rocket's height is 78 feet.

Given a circle with a radius of 2 which is the length of an arc measuring 75

There is a line with slope 1/a going through the point (a, a²). find the equation of the line perpendicular to this line at this point. (don’t let this problem intimidate you! solve the problem as you would if i’d given you specific values. just use variables instead.)

Anyone know? will mark brainliest if you're correct!