Step-by-step explanation:
Let there be x blue ribbons

f is given as -3
-3 is greater than -4, so use the second equation 3x-5.
replace x with -3 and calculate:
3(-3) - 5 = -9 - 5 = -14
The answer is -14.
The length of the rectangle is 0.25 or 1/4. This is because the area is equal to 5/8 or 0.625, and the width of the rectangle is 2 1/2 or 0.25. So 0.625/2.5 = 0.25 or 1/4.
4 (3n-2) is the answer.
Woops. Sorry I had no idea that it said expression (s) instead of expression, but that is one of the answers though.
Hello!

The two angles pictured are corresponding angles, so they are congruent.
Therefore:
17x - 4 = 12 + 15x
Isolate for x by subtracting 15x from both sides:
2x - 4 = 12
Add 4 to both sides:
2x = 16
Divide both sides by 2:
x = 8.