The temperature in a water tank was decreasing each hour, on the graph below. How much did the temperature decrease per hour?

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.

A phone company has a one-time set up fee of $30 and charges $85 per month. What is the rate of change?

Loli planted a banana tree and tracked the growth of it every day in the graph below. What does the initial value represent?

An amusement park charges a one-time entrance fee and a cost per hour. What is the cost per hour from this graph?

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?

What was the starting temperature?

Find the rate of change AND initial value for the table.

A phone company charges a base fee plus a cost per minute. What is the cost per minute?

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?

How much did the gift card start with?

Netflix has started to charge a one-time fee of $10 and charges $2 per movie. What is the initial value?

For babysitting, Nicole charges a flat fee of $3, plus $5 per hour. Find the slope and the y-intercept for Nicole’s charges.