1. an object is projected from the ground with an initial velocity 100 meters per second and its x and y
displacements have the functions:
(t) = 60t, y(t) = 80t – 5t
(a) find the object's speed at t= 1 second.
(b) what's the maximum height the object can reach?
(c) what's the maximum horizontal distance?
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2. for the function f(x) = ez? +2, find the equation of the tangent line to the graph of the function at the
point (0, 1).