-x^2 + 9 - 3x^2 - 11x + 4
-4x^2 - 11x + 13
Answer:
1375
Step-by-step explanation:
Answer:
95% of the population spent between 16.8 hours to 26.2 hours on social media per month
Step-by-step explanation:
- subtracting 1 from sample size: 83-1= 82
- Note Mean=21.5 and standard deviation=2.5
- Subtracting confidence interval from 1 and dividing by 2: (1-0.95)/2=0.025
- At α=0.025 and dF=82, the t-distribution table gives 1.984
- Divide standard deviation by square root of sample size: 21.5/√83= 2.36
- Multiplying answer in step 4 by answer in step 5: 2.36×1.984= 4.68
- For lower end: 21.5-4.68= 16.82
- for upper end: 21.5+4.68=26.18
Answer: Function 1
Step-by-step explanation:
Function 1 has rate of change of
(15.75 - 14.25)/(1 -(-1)) = 0.75. This was calculated using slope formula.
Function 2 has rate of change of 5/6, which is 0.833.