Will mark brainliest if correct! Please answer both <3

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

Ashley spent half of her lunch money on a turkey sandwich. then she spent two-thirds of the money she had left on a bottle of juice and the rest of the money on a cookie. if the cookie cost $.75, how much lunch money did ashley have to start with?

What is the distance between (5 - 2i) and (8 + i)?