Which expression shows how 6⋅45 can be rewritten using the distributive property?
a 6⋅40+6
b 6⋅40+6⋅5
c 6⋅4+6⋅5
d 20⋅6+20⋅5
a 6⋅40+6
b 6⋅40+6⋅5
c 6⋅4+6⋅5
d 20⋅6+20⋅5
