In a class with 42 people, there a 3 times as many japanese speakers as german speakers and twice as many german speakers as those speaking both. in 7 people speak neither of those, how many speak japanese?

The long jump record, in feet, at a particular school can be modeled by f(x) = 19.6 + 2.5ln(x + 1) where x is the number of years since records began to be kept at the school. what is the record for the long jump 11 years after record started being kept? round your answer to the nearest tenth.

Find the nonpermissible replacement for binthis expression. b2/5b +5

Aparticular telephone number is used to receive both voice calls and fax messages. suppose that 25% of the incoming calls involve fax messages, and consider a sample of 25 incoming calls. (a) what is the expected number of calls among the 25 that involve a fax message?