What is the sum of the numbers, written in scientific notation? 1.4 x 103 and 5.6 x 102

A. 1.96 x 2
B. 1.96 x 10^3
C. 1.96 x 4
D. 1.969 x 5

(05.03 mc) part a: explain why the x-coordinates of the points where the graphs of the equations y = 4x and y = 2x−2 intersect are the solutions of the equation 4x = 2x−2. (4 points) part b: make tables to find the solution to 4x = 2x−2. take the integer values of x between −3 and 3. (4 points) part c: how can you solve the equation 4x = 2x−2 graphically? (2 points)