A balloon is floating above a lake and a sunken canoe is below the surface of the lake. The balloon’s vertical position is 12 meters and the canoe is -4.8 meters. The equation 12+d=-4.8 represents this situation. What does the variable d represent?
What value of d makes the equation true? Explain your reasoning.

What value of x is in the solution set of –5x – 15 > 10 + 20x?

Phyllis and chen are saving money to go to a football game. each friend starts with some money and saves a specific amount each week. phyllis made a graph to show the total she has saved at the end of each week. chen wrote an equation to show the total, y, he has saved at the end of each week, x. y = 15x + 15 compare the amount that each friend has when both friends start saving. select the correct answer from the drop-down menu to complete the statement. phyllis starts with $ and chen starts with $

What is the inverse of the function f(x) = 2x + 1?