Linear Function Word Problems

It has been observed that a particular plant's growth is directly proportional to time. It measured 2cm. when it arrived at the nursery and 2.5cm. exactly one week later. First write an equation that represents the growth of the plant over time.

Then determine how tall the plant would be after 9 weeks.

Display your answer in slope-intercept form: y = mx + b

A car rental company charges $100.00 dollars per day plus 0.30 cents per mile travelled. First write an equation, in slope intercept form, that represents this scenario. Then calculate how much it would cost if a person rents a car for 1 day and drives it 300 miles.

y = mx + b

The pollution level in the center of a city at 6:00 am is 30 ppm (parts per million) and it grows in a linear fashion by 25 ppm (parts per million) every hour. If y is pollution and x is the time elapsed after 6:00 am, determine:

1.The equation that relates y with x.

2. The pollution level after 7 hours after 6:00 am

Tags

CCSS.HSF-BF.A.1A

Rod is paid an overtime rate of $25 per hour after his basic wage of $600 per week. First write an equation in slope-intercept that represents his earnings over time for 1 week. What would Rod's earnings be if he works 6 hours of overtime in one week.