All we have to do is replace n with 4. -6-4(4-1) Parenthesis first. -6-4×3 Multiplication next. -6-12 Now subtract. -18 The 4th term is -18. Tell me if this helps!!
Well, first, you need to add up the amount of ten fridges and ten pianos. than you see if its heavier or lighter... > or <....... do you remember how to graph?