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Find the rate of change AND initial value for the table.
rate of change = 8, initial value = 3
Jamaal the plumber charges $25 for a service call plus $50 per hour of service. What is the rate of change?
$50 per hour
The temperature in a water tank was decreasing each hour, on the graph below. How much did the temperature decrease per hour?
decreased 2 degrees per hour
I got a fence installed at my house. The company charged me a consultation fee then a cost per foot of fence. Based on the graph, what was my consultation fee?
$150
Loli planted a banana tree and tracked the growth of it every day in the graph below. What does the initial value represent?
The banana tree was 8 inches when it was planted.
Jamesly is heating a pot of water, the water increases seven and a half degrees every minute. He put water in the pot at 40 degrees. He records the temperature of the water in the pot every minute: y = 7.5x + 40. What does 7.5 represent?
The water increases 7.5 degrees every minute
Suppose that the water level of a river is 34 feet and that it is receding at a rate of 0.5 foot per day. Find the initial value for the receding river.
34 feet
I had a 12 oz cup of water. I took a sip of water every hour. The equation y = 12 - 3x represents the water in x hours. What does the rate of change mean in this equation?
-3 means I drank 3 oz per hour
A phone company charges a base fee plus a cost per minute. What is the cost per minute?
$0.06 (or 6 cents) per minute
For babysitting, Nicole charges a flat fee of $3, plus $5 per hour. Find the slope and the y-intercept for Nicole’s charges.
slope = 5 , y-int = 3
An amusement park charges a one-time entrance fee and a cost per hour. What is the cost per hour from this graph?
$5 per hour
Netflix has started to charge a one-time fee of $10 and charges $2 per movie. What is the initial value?
$10 one-time fee
How much did the gift card start with?
$0
What was the starting temperature?
8 degrees
A phone company has a one-time set up fee of $30 and charges $85 per month. What is the rate of change?
$85 per month


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