Which of these sequences are linear? A.) 6, 11, 16, 21
B.) 1, 3, 9, 27
C.) 7, 4, 1, -2
D.) 0.5, 0, -0.5, -1

Pls answer :)

Match each expression with its simplified form.

Convert 50 kilogram to pounds. (the conversion factor from kilogram to pound is 2.2046.) a. 52.2 lb. b. 110.2 lb. c. 22.6 lb. d. 47.8 lb.

If you were constructing a triangular frame, and you had wood in the length of 4inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood? yes or no. explain your mathematical thinking