Jim and shirley, working together, can rake the yard in 3 hours. working alone, shirley takes three times as long as jim. how long does it take jim to rake the yard alone?

4 hours

Step-by-step explanation:

Let time taken by Jim to rake be x hours

Jim's rate will be 1/x

Let y be time taken by Shirley to rake alone

Shirley's rate is 1/y which is equivalent to 1/3x since Shirley takes three times as long as Jim to imply Shirley's rate is slow

Total rate=1/x+1/3x=4/3x

Combined rate=4/3x which it takes them 3 hours hence a rate of 1/3

Therefore

4/3x=1/3

x=4 hours

(1,4) is on graph of f(x)

f(1) = 4

so 1/4 f(x)

1/4 f(1)

1/4. ×4

1

so point for function 1/4. f(x) is (1,1)

b

step-by-step explanation:

the word superfluous means unnecessary