What is the value of 3ab + 5b - 6 when a = -1 and b = 3?
0
6
18
24

How can the correlation in the scatter plot graph below best be described? positive correlation negative correlation both positive and negative no correlation

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.

700 miles the train takes 5 hours to a travel the distance at what unit rate is the train traveling?