To paint a room it takes mike 75 minutes, joan 60 minutes, and kyle 80 minutes when each person works alone. if all three work together how long will the painting take?

Mike takes 75 minutes to paint the room. So, in 1 minute the fraction of the room Mike paints is .

Likewise, in 1 minute the fraction of the room Joan paints is .

Lastly, in 1 minute the fraction of the room Kyle paints is .

Now, let be the number of minutes taken to paint the whole room when all three are working together.

Then, in 1 minute the fraction of the room the three paint will be .

This can be written as:

Therefore, If all three work together then they will finish the room in:

the answer is the option b

the range is all real numbers

step-by-step explanation:

we know that

the absolute value parent function is equal to

see the attached figure to better understand the problem

so

a. it is v-shaped > is true

b. the range is all real numbers > is not true

because the range is the > [0,∞)

all real numbers greater than or equal to zero

c. it goes through the origin > is true

d. the domain is all real numbers > is true

step-by-step explanation:

i'm sure goog can you get that answer