Dimitra earns $9 per hour working at the bakery she earns $7 per hour babysitting if dimitra works for 4 hours at the bakery and babysits for 5 hours how much more money would she earn

Restrictions on f(x) = 1/x+5 and g(x) = x-2

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.

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²