Answer:
last one
Step-by-step explanation:
p=21 + 2w
p-21=2w
p-21/2=w
Answer:
10 months and $700
Step-by-step explanation:
1) $500 and $20 a month
Month 1: 520
Month 2:540
Month 3:560
Month 4: 580
Month 5:600
Month 6:620
Month 7: 640
Month 8:660
Month 9:680
Month 10:700
2)$300 and $40 a month
Month 1: 340
Month 2:380
Month 3:420
Month 4: 460
Month 5:500
Month 6:540
Month 7: 580
Month 8:620
Month 9:660
Month 10:700
2x^2+3
x=3
2(3)^2+3
2(9)+3
18+3
21 is the answer.