Shea earns $8 per hour for the first 40 hours she works in a week. For any additional hours after that, she earns $12 per hour for that week. Which solution best represents the number of hours beyond the first 40 hours, h, Shea worked this week if she earned more than $380?

To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1

Find the ratios of the corresponding sides

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.