The total cost of hiring Paul the plumber is a function of the card number of hours needed to complete the repair. Paul charges $40 per hour up to a box mom of eight hours, plus a $75 service charge.

If kn = 9 cm, mn = 21 cm, rs = 42 cm, and ps = 18 cm, what is the scale factor of figure klmn to figure pqrs?

Describe in detail how you would construct a 95% confidence interval for a set of 30 data points whose mean is 20 and population standard deviation is 3. be sure to show that you know the formula and how to plug into it. also, clearly state the margin of error.

Brent wants to know what is 5 x 1/2