Which set of points contain solutions to the equation y = -7x +2

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way

Write two point-slope equations for the line passing through the points (6, 5) and (3, 1)

Damon makes 20 cups of lemonade by mixing lemon juice and water. the ratio of lemon juice to water is shown in the tape diagram. lemon juice\text{lemon juice} lemon juice water\text{water} water how much lemon juice did damon use in the lemonade? cups