28. For the school play, adult tickets cost $10 and child tickets cost $6. If 200 tickets were sold and they collected $1,520 in total sales, how many of each ticket were sold?

if a = 1,   and b = 2, then the answer is 47.99999999. if you round that to the nearest whole number, the answer is 48.

the arc length is found by finding the circumference of the full circle (2xpixradius) and then dividing by 4 to find just one quarter of the circle (90 degrees).

so mark-up is 0.4 multiplied by 180 = 72

monitors suck a question

step-by-step explanation: