If you look at the image you can see that it says “x - 2 is greater than/equal to 0
Answer:
!!thanks for the pionts and have terrible day!!
Step-by-step explanation:lol
(-4,-2) is an Invalid pout and each component of the different quotient separately and plug the components into the difference quotient formula .
Answer:

Step-by-step explanation:
So generally an exponential equation is expressed in the form:
and:
. In this case we see that as x increased by 1, the y-decreases, BUT the absolute value is increasing, so it's really just reflected.
Plug in known values:


So if you think about it. you really have
-2 = a * b
-4 = a * b * b
since ab = -2, then we can substitute this into the second equation
-4 = -2 * b
-4 = -2b
Divide both sides by -2
b = 2
You can also deduce that b=2, by realizing to go from -2 to -4, you have to subtract 100% of -2 from -2. This means r=1, so b=1+1, b=2
Anyways, now it's time to solve for a, by plugging in a point as well as b.
-4 = a(2)^2
-4 = 4a
-1 = a
You can verify this by using the other point
-2 = -(2)^1
-2 = -(2)
-2 = -2
So the equation is: 
The regular price is $55.00 and saved $16.50.
You have to work backwards. To get the sale price you normally have to multiply the original price by the percent (%30 -> .30) then subtract to find the price of an item on sale.
But, in this case that was done for us, so instead we have to work backwards.
To do that you have to do $38.50/.70 = $55 (the original price).