An object falls d meters in t seconds. what is the independent variable

Question and answers are in the attached picture. you so much in advance.

For each polynomial, determine the degree and write the polynomial in descending order. a. –4x^2 – 12 + 11x^4 b. 2x^5 + 14 – 3x^4 + 7x + 3x^3

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup