Marietta was given a raise of $0.75 per hour, wish gave her a new wage of $12.25 per hour. write and solve an equat ion to determine marietta's hourly wage before her raise. show that you answer is reasonable.

Recall that the owner of a local health food store recently started a new ad campaign to attract more business and wants to know if average daily sales have increased. historically average daily sales were approximately $2,700. the upper bound of the 95% range of likely sample means for this one-sided test is approximately $2,843.44. if the owner took a random sample of forty-five days and found that daily average sales were now $2,984, what can she conclude at the 95% confidence level?

Two numbers have a sum of -19. one number is x. what expression represents the other number?

Which has the greater energy, light of wavelength 519 nm or light with a frequency of 5.42 x 10^8 sec^-1?