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See below.

Step-by-step explanation:

Triangle:

The area for a triangle is given by the formula:

Where b is the length of the base and h is the vertical height.

We can see that the base length is (2x+4) and the height is (x+3). So, the expression for the area would be:

Rectangle:

The perimeter of a rectangle is given by the formula:

Where l is the length and w is the width.

We can see that the length is 2x-1 and the width is 3x+2. Thus, the perimeter is:

For the area, the formula is:

So, the expression for area would be:

Rectangular Prism:

The volume for a rectangular prism is given by the formula:

The length is (x+2), the width is (x), and the height is (2x+1). Thus:

step-by-step explanation: