0.21 times 10 to the power of 6 standard form

What are the first 4 terms in the multiplication pattern given by the formula 2×4n

If p(a) = 0.70 and p(b) = 0.20, then a and b are independent events if

The input to the function is x and the output is y. write the function such that x can be a vector (use element-by-element operations). a) use the function to calculate y(-1.5) and y(5). b) use the function to make a plot of the function y(x) for -2 ≤ x ≤ 6.