The cost of a bag of chips in a vending machine is $0.85. The cost of a Gatorade in the same machine is $1.50. Kennedy spent $23
.70 on chips and Gatorade for her track team, and bought a combination of 21 bag of chips and Gatorade. Which step shows the FIRST mistake in applying the Elimination Method to solve this problem? A) Step1: - 0.85(x + y = 21) 0.85x + 1.50y = 23.70 B) Step 2: - 0.85x + y = 21 0.85x + 1.50y = 23.70 C) Step 3: 2.50y = 44.70 D) Step 4: y = 17.88
A bag of chip = 0.85, let a bag of chip be x a bag of gatorade is 1.50, let gatorade be y 23.70 is the amount Kennedy spent in all
0.85x + 1.50y = 23.70 step 1: shows the wrong step already, because you shouldn't take out a -0.85, and y is not 0.85 either, but 1.50, so y should still have 1.76 left
Jacinda: d = 10 * t ( a rate: 10 miles per hour ) Raj : d = 1.5 + 4.5 * t Jacinda will catch up with Raj when: 10 t = 1.5 + 4.5 t 10 t - 4.5 t = 1.5 5.5 t = 1.5 t = 1.5 : 5.5 = 0.27 hours = 16.2 min = 16 min 12 seconds
