If f(x) and rl (x) are inverse functions of each other and f(x) = 2х+5, what is rl (8) ?
теnju

loo 3

r(8)=1.5

Step-by-step explanation:

The given function is

when f(x)=8, we have

This implies that:

Hence the point (1.5,8) lies on f(x)

The inverse of function r(x) will have the corresponding point (8,1.5)

This means that:

$7.

Step-by-step explanation:

It is given that the printing company charges a certain amount for each shirt plus a setup fee of $40.

Let x be the cost of each t-shirt.

There are 21 students in the drama club. So, total cost of 21 t-shirts is

It is given that the t-shirt order costs a total of $187.

Divide both sides by 21.

Therefore, the cost of each t-shirt is $7.