While checking its records, a publishing company noted the following costs for publishing books. One book required 60 hours of design, 100 hours of editing, and 200 hours for production and cost $23,000. Another author's book cost $49,500 and required 300 hours of editing, 30 hours of design, and 400 hours of production. A third book required 150 hours of production, 80 hours of editing, and 40 hours for design, all of which cost $17,400. How much would the company charge to publish a book that requires 35 hours of design, 250 hours of edition, and 200 hours of production? Setup the system equation and solve using substitution or elimination showing ALL of your work.

answer set (b) 0.5, 3/4 80% is in order from least to greatest.  

step-by-step explanation:

in order to compare rational numbers to each other, it is much easier if they are in the same form.   typically, the best form in which to evaluate rational numbers is in decimals.   in order to convert a percent to a decimal, you would divide the given percentage by 100.   you can also accomplish the conversion by moving the decimal point over two places to the left.   for example, the decimal value of 80% is 80/100, or 0.8.   in order to convert a fraction to a decimal, you need to divide the numerator by the denominator.   for example, 3/4 is 0.75.   so, for choice (b) 0.5 3/4 (0.75), 80% (0.8) is the only choice in which the numbers are in order from least to greatest.  

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value

this is false ^.^ lol