Answer:
x=-0.8
Step-by-step explanation:
x+4x=-4
5x=-4
x=-4/5
x=-0.8
Random
I think this because Mr. Jackson doesn't know these students on a personal level so he would just pick Randomly
"Each plan utilizes a combination of 2 strength-training sessions and 2 aerobic exercise sessions per week." because.
Let n be the number of aerobic and strength-training exercises per week.
Let x be the number of strength-training exercises per week on the beginner
15x + 20n = 90
Let y be the number of strength-training exercises for week on the advanced plan.
20y + 30n = 130
Multiply both sides by 1.5, to get:
22.5x + 30n = 135
Subtracting equation 2 from 3 we get:
22.5x - 20y = 5
Phone card = $20
You need to minus 17.92 from 20 = $2.08
$2.08 / 0.13 = how many minutes
= 16
I’m pretty sure the Answer is : 1016
