Answer:

Step-by-step explanation:
In order to resolve correctly this combined calculation, we need to resolve it in order:
First, the operation in parenthesis. Secondly, the powers. Then multiplications and divisions, and after all, substraction and adittion.
So, we first resolve the parenthesis: 
We multiply 12 by 2, and 3 by 1. The result is 
Then we resolve the powers:

Thirdly, we resolve the multiplications:
= 72
And finally, the addition:
16 + 72 - 7 = 81
Answer:
1. $700
2.$515
Step-by-step explanation:
BECAUSE IF YOU DISCOUNT IT BY 30% JUST SUBTRACT IT LIKE $1000-30%=700
$2,545-30%=515
<h3>THATS My ANSWER</h3>

Write

, and recall that for a differentiable function

, the derivative at a point

is given by

which would suggest that for this limit,

and

. We have

, and so the value of the limit would be

.
The lowest must be ,,,,,when x=0
so
10y+30=0
10y=-30
y=-3
So your answer is (0, -3)