Which function is the inverse of f(x) = –5x – 4?
a) f-1(x)=-5x-4
b) f-19(x)=-1/5x+4/5
c) f-1(x) = –4x + 5
d) f-1(x) = 4x + 4

Step-by-step explanation:

we have

Let

Step 1

Exchange the variables x for y and y for x

Step 2

Isolate the variable y

Step 3

Let

to find the total number of combinations, multiply the quantity of each item by each other:

2 pairs of shoes x 3 pairs of shorts = 6 different combinations.

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -