Which expression is a sum of a number and a product? O A. 4 + 2x
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B.
C. 6x-4.
O D. 2(x-9)

Find the greatest common factor of -30x 4 yz 3 and 75x 4 z 2.

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

How to find the exponential function y=ca^x, with points (1,2) and (2,1)