Answer:
p = 2.70 or p = 17.30
Step-by-step explanation:
You want to find p such that ...
1200 = -3p² +60p +1060
3p² -60p +140 = 0
Using the quadratic formula, the values of p are ...
p = (-(-60) ±√((-60)² -4(3)(140)))/(2(3)) = (60 ±√1920)/6
p = 10 ± (4/3)√30 ≈ 2.70 or 17.30
A price of $2.70 or $17.30 will result in revenue near $1200.