How many unit cubes are in this rectangular prism?
a) 20
b) 32
c) 47
d) 60

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?

Vertical angles must check all that apply

Will mark 50 show all what is the solution to the system of equations? use the substitution method and show your work. -5x+y= -3 -15 x+3y=7 explain what your answer in part (a) tells you about the association of the lines in this system.