So if the sandwiches cost $7.75 each and the total was $113.50 that would mean that there were 14 sandwiches bought. So 14 times 7.75 is 108.50.
False, they actually decreased some.
This can be expressed by,
80 + 40 + 20 + 10 = 150
The answer would be 42.875
D is correct
3(2x-5)=6x+k
6x-15=6x+k
If 2 equations are identical the solution will be infinite