Question

Paula's Plumbing charges $100 for a house call, including up to one hour of work, and $35 per hour, pro-rated, thereafter. What are the domain and range of the function giving Paula's charge for a job lasting any particular number of hours? A x≥35;y≥135, B x≥0;y≥35, C x≥0;y≥0, D x≥0;y≥100

Answer 1

Answer:

The answer is A x≥35;y≥135

Step-by-step explanation:

Say the cost for plumbing services be y

and also the charges for any number of hours be x

we can model the cost as given that the flat rate is $100 and an additional $35 per hour

y=35x+100

From the expression above we can see that come what may Paula's earnings for a house call will be greater than $135 so long as Pauls spent an hour which will also give an amount greater than or equal to $35