If f(x)=5x, what is f^-1(x)?

a. f^-1(x)=-5x
b. f^-1(x)=-1/5x
c. f^-1(x)=1/5x
d. f^-1(x)=5x

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On any given day, the number of users, u, that access a certain website can be represented by the inequality 1125-4530 which of the following represents the range of users that access the website each day? u> 95 or u < 155 95> u> 155 u< 95 or > 155 95

Average acceleration: i have no idea how to do this.

Someone this asap for a group of students attends a basketball game. * the group buys x hot dogs at the concession stand for $2 each. * the group buys y drinks at the concession stand for $3 each. the group buys 29 items at the concession stand for a total of $70. how many hot dogs did the group buy?