Step-by-step explanation:

Answer:
<h3>-90</h3>
Step-by-step explanation:
To use the order of operations stands for (Parenthesis, Exponents, Multiply, Divide, Add, and Subtract) left to right.
Please Excuse My Dear Aunt Sally!
BOMDAS- (Brackets, Of, Multiply, Divide, Add, and Subtract) from left to right.
First, do parenthesis.
(3-21)=-18
-18(3+2)
Add.
3+2=5
-18*5
Multiply.
-18*5=-90
-90
So, the final answer is -90.
Answer:
B. neither perpendicular nor parallel
Step-by-step explanation:
to be perpendicular, the slopes have to be complete opposites. in this case, the second term would have to be y=-0.5x to be perpendicular. to be parallel, the two would have to have the same slopes; so y=2x and y=2x
Answer:
the correct answer is x= -312/85
Answer:
The correct option is option (B) 1.08(0.87y).
Step-by-step explanation:
It is given that the original cost of cards is y. It is also given that cards was on sale of 13% and the tax in the country is 8%.
There is a sale of 13% it means the prices are 13% less.
13% of y =
The price of cards after discount is
The price after discount is 0.87y.
It is given that the tax in the country is 8%.
The amount of tax on the cards is calculated as shown below,
The price after discount is is calculated as shown below,
Therefore, the correct option is option (B) 1.08(0.87y).