Which system of inequalities does the graph represent? Which test point satisfies both of the inequalities in that system?

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)

James was playing a game with his friends. he won 35 points. then he lost 15, lost 40 and won 55. how did he come out

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.