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Will give braisnlt

One 8x10 photo costs $1.50.

Step-by-step explanation:

You can write two equations and use a system of equations.

Let w = price of 1 wallet-size photo.

Let n = price of 1 of 8x10 photo.

Basic package:

24w + n = 19.5

Deluxe package:

32w + 3n = 28.5

We have a system of equations:

24w + n = 19.5

32w + 3n = 28.5

Multiply both sides of the first equation by -3.

Rewrite the second equation below it and add the equations.

    -72w - 3w = -58.5

(+)   32w + 3n = 28.5

      -40w        = -30

w = -30 / -40

w = 0.75

24w + n = 19.5

24(0.75) + n = 19.5

18 + n = 19.5

n = 1.5

One 8x10 photo costs $1.50.

the area of a triangle is determined by the formula: base x height * 1/2

you'll need to assign a base to the triangle. based on the vertices given, the simplest base would be the line segment from (-2,1) to (2,1). the distance between any two numbers is found by just subtracting them. here, you should subtract the x values to find the distance of this side.

2 - (-2) = 4.

so the distance (aka the length of the base) is 4. the height of the triangle is the distance between the base and the highest point on the triangle which is (3,4). we should subtract the y values this time to find the height/distance.

4 - 1 = 3

so the height is 3.

base = 4

height = 3

hope this if needed hmu