Answer:
change below :)
Step-by-step explanation:
You would start out at in the middle of a number line (horizontal). After the first play, you would move to the left on the line 5 spots (to simulate 5 yards lost) and then make a dot to show your new position. You would do the same thing for the next two plays, moving 5 spots to the left each play and creating a new starting point each time. The total spots moved after the 3 plays is 15 spots to the left.
Answer: 11/3 as a mixed number is 3 2/3
Number 1.
, first we will take the 
of both of these numbers getting us,
, which then gives us that 
Number 2
, solve for our exponent, 
, use the logarithmic formula, and we get,
, which then we get that 
Start by putting two coins on each side of the scale. If one side is higher, then the light coin must be in that pair (use a second weighing to determine which of that pair is the lightest.)
If the initial weighing shows the two pairs to be even, discard those four and go to the three others. Put two of the coins on the scale - one on each side. If one side stays higher, that coin is your light one. If however they are equal, the final unweighed coin must be the lighter coin.
5x = -2x
5x + 2x = 0
7x = 0
x = 0
