The slope of a line is undefined, and the x-intercept is -7. what is the equation of the line? x = -7 y = -7 y = -7x

Can anyone me with 32,33,36,37,and 40.

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Noel is hoping to make a profit (in $) on the school play and has determined the function describing the profit to be f(t) = 8t – 2654, where t is the number of tickets sold. what does the number 8 tell you?