What is the area of a triangle with vertices at (–2, –1), (4, –1), (6, 5)? a. 6 square units b. 9 square units c. 18 square units d. 36 square units

  C.  18 square units

Step-by-step explanation:

The bottom edge is horizontal, so its length is easily determined to be 6 by subtracting one end-point x-coordinate from the other.

Similarly, the height is easily determined to be 6, as that is the difference between the y-values of the base line and the opposite vertex.

The area is half the product of these dimensions:

  A = (1/2)bh = (1/2)(6 units)(6 units) = 18 square units

wholesale price is the initial price before markup. retail price comes after the markup.

a price of 8 bucks that's marked up by 100%   is

formula: initial price + (percent markup in fraction/decimal)(initial price)

8+(1)(8)

8+8

16

retail price is $16.