Each line represents a proportional relationship. Write an equation for each line. Show your work.

Titus works at a hotel. part of his job is to keep the complimentary pitcher of water at least half full and always with ice. when he starts his shift, the water level shows 4 gallons, or 128 cups of water. as the shift progresses, he records the level of the water every 10 minutes. after 2 hours, he uses a regression calculator to compute an equation for the decrease in water. his equation is w –0.414t + 129.549, where t is the number of minutes and w is the level of water. according to the equation, after about how many minutes would the water level be less than or equal to 64 cups?

The formula for the volume of a right square pyramid is given below, where a is the side length of the base and h is the height.

The graph shows how many words per minute two students read. drag to the table the unit rate that matches each graph.