What is the set solution for |y-9|≤12?
A. y≥3 or y≤21
B. -3≤y≤21
C. y≥-3 or y≤21
D. 3≤y≤21

Which solid has two triangular bases and three lateral faces, each in the shape of a rectangle? triangular prism triangular pyramid rectangular prism rectangular pyramid

Solve with work adding cheese to a mcdonalds quarter pounder increases the fat content from 21g to 30g. what is the percent of change ?

The anwser cause i do not understand just plez