Answer:
2x+8
Step-by-step explanation:
let the number=x
Twice the number=2x
sum of 8 and twice the number=2x+8
240................................ It had to be 20 characters so sorry for the large answer <span />
d₁ = -16t² + 122t
d₂ = -16t² + 84t
d = d₁ - d₂
d = -16t² + 122t - (-16t² + 84t)
d = 38t
After five seconds, t=5,
d = 38(5) = 190
Answer: 190 feet
3n - 1
When n = 1,
3n - 1 = 3*1 - 1 = 3 -1 = 2
When n = 2,
3n - 1 = 3*2 - 1 = 6 -1 = 5
When n = 3,
3n - 1 = 3*3 - 1 = 9 -1 = 8
Hence, the first three terms are 2, 5 and 8.
