Opal makes $15 per hour working for a photographer. She also coaches a competitive soccer team for $10 per hour.
Opal needs to earn at least $90 per week, but she does not want to work more than 20 hours
per week.
Define the variables and write a system of inequalities to represent this situation

Can you guys plz answer this question in order and quickly plz i will give 30 points

Nnnnneeedd 1.find the residual if you know the actual number is 5.2 and the predicted value is 4.8

17. a researcher measures three variables, x, y, and z for each individual in a sample of n = 20. the pearson correlations for this sample are rxy = 0.6, rxz = 0.4, and ryz = 0.7. a. find the partial correlation between x and y, holding z constant. b. find the partial correlation between x and z, holding y constant. (hint: simply switch the labels for the variables y and z to correspond with the labels in the equation.) gravetter, frederick j. statistics for the behavioral sciences (p. 526). cengage learning. kindle edition.