What is an 18-18 steel?

What is the formula to figure out square foot? Can someone name the slope and y-intercepts for each equation:y = 2x - 3y = x + 5y = -4? What are Allocation cycle? What is the advantage of bode diagram? Reduce this fraction to lowest terms 5 over 100? What does it mean not twice or more? What is a word called you can spell front and backwards the same? What is the term for a factor that two or more numbers share? How many oz in a 12.5 pound turkey? Which is greater 900 1bs or 1 ton? What is the value of a Stoeger Arms 12 gauge Zephyr Woodlander side by side? If a number is decreased by 5 and the result is is twice the original number-What is the number? What is 1 dollar and 1 penny? A correlation coefficient represents what two things? Are any two points collinear? What is demonstrated by the two point discrimination test? What is an integer for a gain of 8 pounds? How did they come up with the conversion of 1cm cuber to be 1ml? How can you make a positive difference to a residents life? What is the slope for y equals x plus 1?