In a study of 298 comma 049 cell phone users, it was found that 132 developed cancer of the brain or nervous system. assuming that cell phones have no effect, there is a 0.000485 probability of a person developing cancer of the brain or nervous system. we therefore expect about 145 cases of such cancer in a group of 298 comma 049 people. estimate the probability of 132 or fewer cases of such cancer in a group of 298 comma 049 people. what do these results suggest about media reports that cell phones cause cancer of the brain or nervous system?

Perform the indicated operation. 8/a - 6/a + 7/a

Beatrice decides she wants to babysit a few children at the same time to earn the money faster. she tells parents that if they allow her to babysit their children at her house, she will eliminate her automatic $5 tip and will give them an additional $5 discount. (a) write an equation showing the total cost for each client. identify all variables. (b) four parents bring their children to beatrice’s house at the same time for babysitting. beatrice wants to find out how many hours she must babysit the 4 children to earn exactly the $100 she needs in order to buy the present for her mother. write and solve an equation to find the number of hours. justify each step in the solution. (c) one parent decides not to drop off her child. the remaining 3 parents drop their children off at 9 a. m. two of the parents say they will be back at 1 p. m. the third parent says she will pick up her child at 2 p. m. at noon, beatrice realizes she needs feeding the 3 ch

Marlow is comparing the prices of two trucks rental compaines company a charges $3 per hour and an addtional $75 as serivce charges company b charges $2 per hour and an additional $85 as serivce charges