book Maths Puzzle Numerical Ability

A sky diver in free fall travels at a speed modeled by

V(t) = 176(1 - e - 0.18 t)

ft per second after t seconds. How long will it take for the skydiver to attain the speed of 60 mph (note: 60 mph = 88 ft/sec)?

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book Other Question
Show EACH step in solving each of the following equations. Show which method (factoring, square root method, completing the square, or quadratic formula) you used to solve it and tell why.
a: (x + 2)^2 = 8
(c-2b)2squared + d
when a=1,b=-2, c=3, and d=-4