Juan and Adam both need iphone cords and batteries. The equation that represents Juan’s purchases is y = 27 – 3x. The equation that represents Adam’s purchases is y = 17 – x. If y represents the price of the batteries, and x represents the price of the pens, what are the prices of the iphone cords and batteries? PLS ANSWER this one too!!

4. find the geometric mean of 4 and 12. 24 8

Sole with work in 10 years, the average number of hours of tv watched per week by teenagers dropped from 23.9 to 21.4. find the percent of change.

The random variable x is the number of occurrences of an event over an interval of ten minutes. it can be assumed that the probability of an occurrence is the same in any two-time periods of an equal length. it is known that the mean number of occurrences in ten minutes is 5.3. the appropriate probability distribution for the random variable