Agraph titled rate of launch is shown. the x-axis label is time in seconds, and the x-axis values are from 0 to 20 in increments of 4 for each grid line. the y-axis label is number of balls, and the y-axis values from 0 to 160 in increments of 32 for each grid line. a line is shown connecting points on ordered pair 4, 32 and 8, 64 and 12, 96 and 16, 128. which expression can be used to calculate the rate per second at which the machine launches the balls? fraction 32 over 4 fraction 4 over 32 fraction 128 over 4 fraction 4 over 128

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.