Answer:
C
Step-by-step explanation:
Because a parameter is regarding a whole population. The other options are samples of a population.
Answer:
12+4y
Step-by-step explanation:
12+3y+y=12+4y
Answer:
12,760,000 in scientific notation

Answer:
If you simplify it you get d^2-4d
Step-by-step explanation:
Answer: The new amount is 0.78*5500. Which is 4290. The decrease is 5500-4290=1210.