First use the chain rule; take . Then
By the power rule,
By the quotient rule,
So
The cost of t-shirts varies directly with the number of t-shirts. The data is shown in the graph. If x = is number of t-shirts,
and y = the cost, which equation models Bill's direct variation?
A) y = 11x
B) y = 5.5x
C) y = 11 + x
D) y = 5.5 + x
Thanks
A) y = 11x
B) y = 5.5x
C) y = 11 + x
D) y = 5.5 + x
Thanks
2 answers:
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