If f(x) and 1(x) are inverse functions of each other and f(x) = 2x + 5, what is f^-1(8)? A. - 1
B. 3/2
C. 41/8
D. 23

B

Step-by-step explanation:

To solve this problem, we first need to find the inverse of f(x). Then, you would plug in x=8. To find teh inverse, you switch y with x and x with y, then solve for y.

y=2x+5                     [switch y with x and x with y]

x=2y+5                     [subtract both sides by 5]

x-5=2y                      [divide both sides by 2]

y=(x-5)/2

Now that we have the inverse function, we plug in x=8 and solve.

y=(8-5)/2                  [subtract]

y=3/2

Now, we know that f⁻¹(8)=3/2.

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)