Tina works 15 hours a week (Monday to Friday). Last week she worked 3 ½ hours on Monday, 4 hours on Tuesday, 2 ⅙ hours on Wednesday, and 1 ½ on Thursday. How many hours did she work on Friday?

In two or more complete sentences, formulate how to use technology to calculate the appropriate regression model for the given data. you are not required to find the model, just choose the appropriate regression and explain how to use the technology. (-5,,2.,0.8), (0,-0.5), (2,-1.3), (3,-0.8), (5,2)

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827

Acomposition of transformations maps δxyz to δx"y"z". the first transformation for this composition is , and the second transformation is a 90° rotation about point x'.