Solve, using the substitution method.
y – 2x = 8
16 + 4x = 2y
a.
the only solution is (24, 0).
b.
there is no solution.
c.
the only solution is (1, 10).
d.
there are an infinite number of solutions

Describe in detail how you would construct a 95% confidence interval for a set of 30 data points whose mean is 20 and population standard deviation is 3. be sure to show that you know the formula and how to plug into it. also, clearly state the margin of error.

How to find the exponential function y=ca^x, with points (1,2) and (2,1)

The interior angles formed by the side of a hexagon have measures of them up to 720° what is the measure of angle a