Answer:
you'll have to pay $20
Step-by-step explanation:
I guess the function is a parabola with vertex at (0,0) and opens down so the range is (-infinity, 0].
Answer:
24 blank shirts
Step-by-step explanation:
I'm guessing you're asking for blank shirts. 12+6+4+2=24. 24 teams so far, but there are the blank shirts.
(24+b)/2=b. Multiply by 2
=24+b=2b. Subtract b
24=b