Astate has a limit on the lengths of cargo trains. the train cannot exceed a length of 1,100 ft. train a has 28 cars at 40 feet each, and train b has 34 cars at 30 feet each. do the trains meet requirements?

I'll give brainliest if you answer right : )

Scores on the cognitive scale of the bayley-scales of infant and toddler development range from 1 to 19, with a standard deviation of 3. calculate the margin of error in estimating the true mean cognitive scale score, with 99% confidence, if there are 12 infants and toddlers in a sample.

Which of the following graphs could represent a cubic function?