43. Make Sense and Persevere The lowest and leftmost note on a piano keyboard is an A.
The next lowest A is seven white keys to
the right. This pattern continues. Write an
explicit formula for an arithmetic sequence to
represent the position of each A key on the
piano, counting from the left. If a piano has
52 white keys, in what position is the key that
plays the highest A?

Question 1 of 10 2 points different groups of 50 graduates of an engineering school were asked the starting annual salary for their first engineering job after graduation, and the sampling variability was low. if the average salary of one of the groups was $65,000, which of these is least likely to be the average salary of another of the groups? o a. $64,000 o b. $65,000 o c. $67,000 o d. $54,000

Evaluate the function , when d = {9, 15, 30}. r = {5, 7, 12} r = {6, 10, 15} r = {6, 10, 20} r = {5, 12, 20}

Abag contains pieces of paper numbered from 5 to 9. a piece of paper is drawn at random. what is the theoretical probability of drawing a number less than 8?