In a certain town there were 483 robberies last year. This year the number of robberies has gone
down 12%. How many robberies were there this year, to the nearest whole number?

6n^2-7n-75=0 solve by quadratic formula

Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?

Susie wants to take her friend out for lunch.she wants to spend $9.75 each person. how much will she spend in all.