Both of the following Roof companies charge a service call fee and an hourly rate, for residential service. For Johnson's Roof Service, a 2 hour service costs $125 and a hour service costs $162
For Walton's Roof Service, a 2 hour service costs $123 and a 3 hour service costs $153
For each company, find a linear model for the relationship between the hours spent on a repair and the
total charges of a repair. Let, represent the number of hours of service and C represent the cost of the
service
The linear model for Johnson's Roof Service:
The linear model for Walton's Roof Service:
hour service. (round to the nearest
The services of these companies would cost the same for a
tenth of an hour)

For what is the measure of the angle at the top of the shed? a. multiplication of areas b. squaring of areas c. addition of areas d. division of areas

The average hourly earnings for a construction worker is projected to be $24.50 in 2012. jason wants to join the construction work force after he graduates in 2012. his friend tells him that average hourly earnings for construction workers will rise by 2% from 2009 to 2012. based on the data below, assuming that the projected hourly earnings are correct, is jason’s friend’s statement accurate? construction industry - average hourly earnings, 2000-2009 a. his friend’s statement is accurate. the average hourly earnings will increase by 2%. b. his friend’s statement is not accurate. the percent increase will be more than 2% c. his friend’s statement is not accurate. the percent increase will be less than 2% d. his friend’s statement is not accurate. the average hourly earnings will decrease

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.