$2,200 people enter an amusement park every hour. How long will it take for 6,600 people to enter the park ?
2 answers:
You might be interested in
Answer:
- 494
Step-by-step explanation:
Breaking down the summation into it;s component parts
= 4k - k(k + 1) ← substitute k = 19
= (4 × 19 ) - 1.5 × (19 × 20)
= 76 - (1.5 × 380)
= 76 - 570
= 494