A computer rental company charges $7 for the first hour and $5 for every hour after that. The equation 5(t - 1) = R - 7 models the fee, where t = number of hours and R = rent rental fee. Candy's rental fee was $22. Calculate how many hours she rented the computer.

Solve 2x+y=3 x+y=5 in substitution method

21 type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar. the solution set of n2 - 14n = -45 is { (separate the solutions with a comma)

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?