exam Maths Puzzle Numerical Ability

please help me to find the correct answer for the following:
problem #1: 4-2(k-3m) = 2e
find k

problem #2: 2x^3 y^4 z^3(4x^2 y^4 z^3 - 3xy^3 - 12yz

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exam Other Question

Anyone able to figure this one out? Thanks for your assistance.
What is the equation of the line through points (-3, 2) and (-4, 5)?
a. y= (-3/2)-7
b. y= -3x-7
c. y= -3x+7 Find the interest earned at the end of the first year on 6,800. invested at 4% I started with I=0.4x1/12=6800 then is it0.4 /12=6800/12 I am stuck