16. peter works part time for 3 hours every day and cindy works part time for 2 hours every day. a. if both of them get $4.50 an hour, write an inequality to compare peter’s and cindy’s earnings. b. what should cindy’s per-hour income be so that she earns at least $14 a day? write an inequality and an explanation of how to solve it.

What is the equation of a vertical line passing through the point (−5, −1)? y = −5 y = −1 x = −5 x = −1

Water flows at a steady rate from a tap. its takes 40 seconds to fill a 4 litre watering can from the tap. the rate at which water flows from the tap is halved. complete: 4 litres into cm3

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?