Answer:
-5.04199038
Step-by-step explanation:
(y2-y1)/(x2-x1)
Plus, mthway can double check
7x-2-(3x-9)-(x+7)
=7x-2-3x+9-x-7
=7x-3x-x-2+9-7
=3x
50m ≅164 ft (3s.f.)
50m/s≅164 ft/s
distance after 20s:
d=164 ft/s ⋅20s
=3280ft
Hope This Helps!