Answer:
17
Step-by-step explanation:
-(-17)= 17
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 
Answer: The expression representing the amount of money spent is
by Emily.
Step-by-step explanation:
Since we have given that
Let the cost price of per pair of sandals be 's'
Let the cost price of per pair of boots be 's+30'.
Number of pairs of boots = 2
Number of pairs of sandals = 3
Total cost would be

Hence, the expression representing the amount of money spent is
by Emily.
Answer: y=-2x+5
Step-by-step explanation:
I am not sure if this is exactly what you are asking but all you have to do is plug the variables into the formula y=mx+b
Which should give you the above answer of y=-2x+5