exam Maths Puzzle Numerical Ability

I need this asap!! I'm trying to pass this class!!!

graph log 2(2x)

graph y = log2(x)

graph y=e^x and z=e^(2x)in the same window

graph y=log2(x)and z=log2(2x)in the sam

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exam Other Question

i have to use synthetic diision . (2x^4-5x^3-50x+1) divided by (x-4). I have no clue where or how to insert zeros. Solve.

7x + x(x-3) = 0

Find the x-intercepts of f(x)= 7x + x(x-3)

a. What are the solutions?
b. What are the x-intercepts?

Please help, I keep getting confused and told I do not have the correct answer.