A negative minus a negative is always a positive ;)
Step-by-step explanation:
The algebraic expression for The sum of z and 7 algebraic expression is given as:
z + 7
Answer: the distance is 10
Step-by-step explanation: its 10 cause like if you draw a number line and label it and then go backwards till you get to -1 it will be 10
Answer:
Step-by-step explanation:
It's already in a form that only ha positive exponents. Just to state it though you could rewrite it as 
or 
The question asks for positive exponents though so yu don't need to do that.
You also need to know 
so in this case 
so 
3+4
that is one of em but you did not provide me with an image so i cant really answer but give u a simple equation like that one on top.
