Create an algebraic expression to solve the following problems. a) Jeff’s cell phone plan charges him $10 per GB with no extra fees. How much will his bill be for 6 GB?

b) Marks cell phone charges him $8 per GB and a monthly fee of $15 how much will his bill be for 10 GB

c) Ricks cell phone plan charges him $5 per GB and a monthly for of $30. How much will his bill be for 2 GB?

PLEASE ANSWER PLEASE

3.17 scores on stats final. below are final exam scores of 20 introductory statistics students. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 57, 66, 69, 71, 72, 73, 74, 77, 78, 78, 79, 79, 81, 81, 82, 83, 83, 88, 89, 94 (a) the mean score is 77.7 points. with a standard deviation of 8.44 points. use this information to determine if the scores approximately follow the 68-95-99.7% rule. (b) do these data appear to follow a normal distribution? explain your reasoning using the graphs provided below.