Romain knows the following information about the 32 classes he took in high school: - He studied for but did not pass 3 classes. - He passed 27 classes in total. Can you help Romain organize the results into a two-way frequency table? Passed the class Did not pass the class

Factor. \[ 3 x^{2}+13 x-10 \]

7. Realitza les següents operacions a) \( \left(3 x^{2}+11 x+4\right)+\left(x^{2}-3 x-2\right)= \)

Use a formula to solve the problem. To start a mobile dog-grooming service, a woman borrowed \( \$ 4,500 \), If the loan was for 2 years and the amount of interest was \( \$ 414 \), what simple interest rate was she charged?

You are given the sample mean and the population standard deviation. Use this information to construct the \( 90 \% \) and \( 95 \% \) confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals. From a random sample of 44 business days, the mean closing price of a certain stock was \( \$ 115.05 \). Assume the population standard deviation is \( \$ 9.77 \).

Use a formula to solve the problem. An airplane flew from Chicago to San Francisco in 3.9 hours. If the cities are 1,950 miles apart, what was the average speed (in mph ) of the plane mph