Phone plan a advertises a rate of $0.25 per minute, while phone plan b advertises a rate of $0.17 per minute for the first 100 minutes and $0.32 for each additional minute. • identify which plan has a variable rate of change and explain why the rate is variable. • identify the cost for phone plan a and for phone plan b when 100 minutes are used. show all your work. • compare plan a and plan b and describe when phone plan a is a better deal than plan b

Christine wong has asked dave and mike to her move into a new apartment on sunday morning. she has asked them both, in case one of them does not show up. from past experience, christine knows that there is a 40% chance that dave will not show up and a 30% chance that mik a. what is the probability that both dave and mike will show up? (round your answer to 2 decimal places.) b. what is the probability that at least one of them will show up? c. what is the probability that neither dave nor mike will show up? (round your answer to 2 decimal places.)e will not show up. dave and mike do not know each other and their decisions can be assumed to be independent.

Which of the following equations is equivalent to x/3-6/x=1

Find two numbers if their sum is 91 and the ratio is 6: 7?