exam Maths Puzzle Numerical Ability

Find the slope of the line that passes through (0,2) and (4,4)

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exam Other Question

3(x-2)+2=2(x-4)

-7x=-26+6x

7x+3>9x-5

I=Prt solve for r

This is from Beginning Algebra by John Tobey, Jeffrey Slater
6th edition
Please help factor, this one, I find very difficult. thanks!

(t^2+2)^2+4(t^2+2)-32