Rates of Change - Page 3
Questions
- The table below lists braking distance (in meters) vs starting speed (in kilometers per hour). What is the nature of the relationship of the values? If the length of some skid marks is #104# meters, then what was the driver's estimated initial speed?
- If Denise can run 5 km in 30 minutes and Clark can run 6 km in 39 minutes, who's faster?
- How do you calculate rate of change?
- In a particular city in one year, the birth rate is 25 per 1,000 people. The death rate per 1,000 people#color(blue)(" is 17 per 1,000 people")#. What is the city's annual population growth?
- A kayak can travel 70 miles downstream in 5 hours, while it would take 35 hours to make the same trip upstream. Find the speed of the kayak in still water, as well as the speed of the current?
- A train travels 60km in M minutes. If it's average speed is 400km per hour find the value of M?
- What is the rate of change of a horizontal line?
- Kevin's savings account balance changed from $1140 in January to $1450 in April. How do you find the average rate of change in dollars per month?
- What is rates of change?
- A train travels a distance of 480 km at a uniform speed. If the speed had been 8 km/h less, then it would have taken 3 hours more to cover the same distance. What is the speed of the train?
- How do you solve #\frac { 6} { x - 3} \geq 4#?
- What is the rate of change of the ordered pairs (1250,1) and (-520, 4)?
- What is the rate of change in #y=1/3x-4#?
- Over a 12 hour period from 8 p.m to 8 am the temperature fell at a steady rate from 8 degrees F to -16 degrees F. If the temperature fell at the same rate every hour, what was the temperature at 4 a.m.?
- For the following problem, y varies directly as x. If y = −12 when x = 9, find y when x is 15?
- It costs $5.50 per hour to rent a pair of ice skates, for up to 2 hours. After 2 hours, the rental cost per hour decreases to $2.50. How much does it cost to rent a pair of ice skates for 4 hours?
- If a runner runs at a constant speed of 120 minutes and runs 18 miles, how far did she run in 160 minutes?
- At the beginning of 2007, a start-up company had already received 120,000 hits at its website. At the beginning of 2009, that number had climbed to 440,000. What is the rate at which the number of hits is increasing?
- How do you graph #\frac { 2} { 3} x = 6y - 8#?
- Christiana's pay varies directly with the number of hours she works. If she works 5 hours, she earns $80. How much does Christiana earn if she works 8 hours?