Nellie's graduation picnic will cost $258 if it has 86 attendees. At most how many attendees can there be if Nellie budgets a total of $528 for her graduation picnic? Solve using unit rates.

When you answer this can you explain

Florence price's brownies and more sells all types of cookies and pastries. on tuesdays, they markdown all brownies 75% to a sale of $1.50 a dozen. find the selling price and the markdown of a dozen brownies.

Solve each equation using the quadratic formula. find the exact solutions. 6n^2 + 4n - 11