Rachel went to the mall to buy new clothes. macy's was having a sale: 4 dresses for $84. rachel decided to buy one dress. how much did one dress cost

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?

How can you find the magnitude of a vector, v = < x,y > , where the horizontal change is x and the vertical change is y?

What is the y-intercept of the line with the equation 3x + 4y = 12?