B. 90. The perimeter is 30+30+15+15=90
The LCD is 10 because you can multiply 2/5 by 2 to get 4/10
You would subtract 5x from y so y=5x-10
Answer:
1. y = 5x + 20
2. $20 the amount you saved mowing your aunt's lawn.
3. 21 weeks
Step-by-step explanation:
1. 5 is the slope because it is the rate. 20 is the y-intercept because that is how much you already have.
2. 20 because that is how much you already have.
3. Since you already have $20, you need to subtract 125 by 20 to get 105. Then you divide 105 by 5 to get 21 weeks.