What is the simplified form of the expression?
-(8d - 3w)
a. 8d - 3w
b. -8d + 3w
c. 8d + 3w
d. -8d - 3w

Let f(x) = x+3 and g(x) = 1/x the graph of (fog)(x) is shown below what is the range of (fog)(x)?

Sara made $253 for 11 hours of work. at the same rate how much would he make for 7 hours of work?

The discrete random variables x and y take integer values with joint probability distribution given by f (x,y) = a(y−x+1) 0 ≤ x ≤ y ≤ 2 or =0 otherwise, where a is a constant. 1 tabulate the distribution and show that a = 0.1.2 find the marginal distributions of x and y. 3 calculate cov(x,y).4 state, giving a reason, whether x and y are independent. 5 calculate e(y|x = 1).