A(1) = -11
a(n) = a(n − 1) . 10
What is the 4th term in the sequence?

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean  and standard deviation  according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%