exam Maths Puzzle Numerical Ability

Is there an easy way to find the slope of a line whose function is stated as an inequality of y=m+b? For example: 5(x+y)=20+3x How would this be put into y=mx+b form?

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exam Other Question

I^-1 =

a. 0
b. I
c. 1
d. You cannot find the inverse of this matrix In 1921, President Taft decided that the ratio of the length to the height of an American flag should be 1 to 1.9. If a flag is 25 square feet, how long and tall is it?