Gary and his friends go to see a movie. gary buys x movie tickets at the rate of $8 per ticket and a tub of popcorn for $5.50. if f(x) is the total amount he spends at the theater, which of the following linear functions models this situation? a. f(x) = 8x + 5.50 b. f(x) = 5.50x + 8 c. f(x) = 44x d. f(x) = 13.50x

The answer would be A, as the tub of popcorn is only purchased once and its 8 per ticket, where as x represents the tickets.

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c

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