If f(x)=x^5+5x^3+4, what is the remainder when f(x) is divided by x-2?

Hi i’m not sure how to do question 20 if u could explain how to do it that’d b great

Quadrilateral efgh was dilated with the origin as the center of dilation to create quadrilateral e'f'g'h'. the quadrilateral was dilated using a scale factor of 2.5. the lengths of the sides of quadrilateral efgh are given. what is the length of side f'g'?

47: 4 aisha changed 1.45 + 2.38 to 1.5 + 2.4 in order to estimate the sum. what estimation method did she use?