Karen bought a total of seven items at five different stores. She began with $65.00 and had $15.00 remaining. Which of the following equation can be used to determine the average cost per item?

A
5x =$65.00-$15.00

B
7x+ $15.00=$65.00
C
7x =$75.00
D
7x × 5=$50.00

Multiply −2x(6x^4−7x^2+x−5) express the answer in standard form. enter your answer in the box.

Given: m zade = 60° and m2cdf = (3x + 15) prove: x = 15

Abottled water distributor wants to estimate the amount of water contained in 1-gallon bottles purchased from a nationally known water bottling company. the water bottling company’s specifications state that the standard deviation of the amount of water is equal to 0.02 gallon. a random sample of 50 bottles is selected, and the sample mean amount of water per 1-gallon bottle is 0.995 gallon a. construct a 99% confidence interval estimate for the popula-tion mean amount of water included in a 1-gallon bottle. b. on the basis of these results, do you think that the distributor has a right to complain to the water bottling company? why? c. must you assume that the population amount of water per bottle is normally distributed here? explain. d. construct a 95% confidence interval estimate. how does this change your answer to (b)?