Walid is four times as old as Sami . Five years ago, Walid was 7 times old as Sami . How old is Walid and how old is Sami ?​

What is f(3) for the quadratic function f(x)= 2x^2+ + x - 12

Breana is selling tickets to a choral performance. on the first day of ticket sales , she sold 3 senior citizen tickets and 1 child ticket for a total of $38. breana took in $52 on the second day by selling 3 senior citizen tickets and 2 child tickets. what is the price of a senior citizen ticket?

What is the product of (4x + - 5)? a) -8x^2 - 26x - 15 b) -8x^2 + 26x - 15 c) -8x^2 - 26x + 15