Doctor Forrest charges $60 for a home visit plus an additional fee of $12.50 per hour spent with the patient. Doctor Forrest arr
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-16t^2+400=0
16t^2=400
take square root on both sides.
4t=20
t=20/4
t=5
-16t^2+400=0
16t^2=400
take square root on both sides.
4t=20
t=20/4
t=5