Which of the following expressions represents the value, in dollars, of a certain number of nickels, n, and dimes, d? a. 0.15nd b. 0.15n + d c. 0.10n + 0.05d d. 0.05n + 0.10d

What is the solution to the system of equations? (–2, –8) (–1, –5) (0, –2) (2, 4)

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is

The random variable x represents the number of phone calls an author receives in a day, and it has a poisson distribution with a mean of 8.7 calls. what are the possible values of x