1. A collection of nickels and dimes has a value of $1.85. The value of the dimes is $0.10 less than twice the value of the nickels. Which
system of equations can be used to find the number of nickels and
the number of dimes?

A. n+d = 185; n-d = 1
B. n+d = 185; 2n-d = 1
C. 5n+10d = 185; d = 2n - 1
D. 5n + 10d = 185; n - d = 1

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

Does the function satisfy the hypotheses of the mean value theorem on the given interval? f(x) = 4x^2 + 3x + 4, [−1, 1] no, f is continuous on [−1, 1] but not differentiable on (−1, 1). no, f is not continuous on [−1, 1]. yes, f is continuous on [−1, 1] and differentiable on (−1, 1) since polynomials are continuous and differentiable on . there is not enough information to verify if this function satisfies the mean value theorem. yes, it does not matter if f is continuous or differentiable; every function satisfies the mean value theorem.

One number is 4 less than 3 times a second number. if 3 more than two times the first number is decreased by 2 times the second number, the result is 11. use the substitution method. what is the first number?