Find the slope of the lines

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?

Aflower has 26 chromosomes. to create a new flower, how many chromosomes would a sperm cell have? what is this process called? part 2: within a flower cell that has 26 chromosomes, how many chromosomes would a cell that is created within the stem of a flower as it grows, have? what is this process called?

Two numbers have a sum of -19. one number is x. what expression represents the other number?