Find two rational expressions a / b and c / d that produce the result x − 1 / x2 when using the following operations. answers
for each type of operation may vary. justify your answers.
a. addition
b. subtraction
c. multiplication
d. division

The bake stars picked 907 apples last weekend at a local orchard they made caramel apples and sold them in the bakery in trays of 6

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.

Mr. walker is looking at the fundraiser totals for the last five years , how does the mean of the totals compare to the median?