AT&T CL84100 60 73 Excellent 7 AT&T TL92271 80 70 Very Good 7 Panasonic 4773B 100 78 Very Good 13 Panasonic 6592T 70 72 Very Good 13 Uniden D2997 45 70 Very Good 10 Uniden D1788 80 73 Very Good 7 Vtech DS6521 60 72 Excellent 7 Vtech CS6649 50 72 Very Good 7 a. What is the average price for the phones (to 2 decimals)? b. What is the average talk time for the phones (to 3 decimals)? hours c. What percentage of the phones have a voice quality of excellent (to the nearest whole number)

Idon’t understand! use slope intercept form to solve: through: (2,5) slope= undefined

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.

Math i have no idea how to do a and b