Need help
Use algebraic addition to simplify these expressions. Show your work.
A. (-1)-(-8)
B.(-7)- 7
C.(-4)- 6
D.(-1)+(-7)-4
E. 5-(-5)-(-4)

Acommunity group is building a garden on a rectangular lot of land. the lot measures 5x by 10x and the garden will be circular with a radius of 3x. how much of the land will be left over after the garden is built? a. 41 pi x^2 b. x^2 (50 - 9 pi) c. x^2 (50 - 3 pi) d. 41x^2