Rewrite the expression by using grouping symbols. y • 4 + y • z a. y • (4 + y) • z b. y (4 + z) c. 4(y + z) d. z(y • 4)

Which of the following is a proper fraction? a. 9⁄8 b. 5⁄6 c. 7⁄3 d. 4⁄2

The candy store is having a 30% off sale. emma is going to buy $7.50 worth of candy. how much will she pay after the discount

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?