Write an equation for the description. The length of a rectangle is twice its width. The perimeter of the rectangle is 123 feet.

The equation for the description is:

Step-by-step explanation:

We need to write an equation for the description.

The length of a rectangle is twice its width. The perimeter of the rectangle is 123 feet.

Let Width of rectangle = x

Length of rectangle = 2x (twice its width means, multiplying 2 with width)

Perimeter of rectangle = 123 feet

The formula used is:

Putting values and finding equation:

So, the equation for the description is:

You can simplify the equation as:

Both equations can be used:

first option

a function is a relation in which an input is paired with exactly one output.

so, let's find the right answer.

in our first option, our inputs are january, february, and march. the outputs are 30, 28, and 25. each input has it's own output. this is correct!

our second option we know is incorrect, because ms. valverade has two outputs, dogs and cats. this is not a function.

our third option is incorrect as well. the yellow square has two ouputs, the square and the triangle.

lastly, in our fourth option, we see the number 7 two times with a different output. therefore, this is not a function.

remember: each input must be paired with only one output!

b is 38 degrees.

a is 52 degrees.

this is because if b is 38 and a is 14 degrees more than b than 38+14=52 and 52+38=90 degrees. hope this .