Joan is hiking. She wants to cover 1,600 feet. She hikes 600 feet every 3 hours. The equation of the line that models y, the distance left to hike, after hiking for x hours is y = x + ?
. It will take Joan ?hours to hike 1,600 feet.

2x - 20 = 32 20 - 3x = 8 6x - 8 = 16 -13 - 3x = -10

Two blends of tea are mixed to make a blend that will be sold at the fair. black tea sells for $2.20 per pound and orange pekoe tea sells for $3.00 per pound. how much of each should be used to obtain a 4lb blend selling for $2.50 per pound?

Which of the following is best modeled using a linear equation y=ax+b, where a is less than 0?