1. Let R(x) = 3x3 + 2x2 + x and S(x) = 4x4 + 1. Find R{x) + S(x).

• A. 7x^3 + 2x² + x
• B. 7x^5+ 3x² + x
. C. 3x^3 + 6x^2 + x + 1
. D. 10x^8 + 1

Aefg - almn. find the ratio of aefg to almn. a)1: 4 b)1: 2 c)2.1 d)4: 1

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).

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?