Tickets for the school play cost $4 for students and $7 for adults. For one performance, 146 tickets were sold for $779. How many tickets were for adults and how many were for students?
a 65 students and 81 adults
b 80 students and 66 adults
c 70 students and 77 adults
d 81 students and 65 adults

Rachel reads 1/5 of the pages of a book plus 12 pages on the first day. on the second day, she reads 1/4 of the remaining pages plus 15 pages. on the third day, she reads 1/3 of the remaining pages plus 18 pages. on the fourth day, she reads the remaining 70 pages. how many total pages are in the book?

Simplify 15(x - 4)(x -1)-3(x + 4)(x - 1) with steps

Hi, can anyone show me how to do this problem? 100 points for this. in advance