Its 8
not sure how to show the work but drew a pic and its 8
Graph A because the slope and y intercept is correct on that graph
<span>29+10j= -11
</span><span>29+10j - 29 = -11 - 29 (subtract 29 to both sides)
10j = -40
10j/10 = -40/10 (divide both sides by 10)
j = -4
</span>
-64 + -4 = -68
That is because 64 + 4 = 68 and the negatives in this case are the same way as if it was all positive.
A graphing calculator shows it takes 3.25 seconds for the shoe to hit the building.
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200 -16t^2 = 31
169 = 16t^2
√(169/16) = t
t = 13/4 = 3 1/4