What is the solution set for 7 - 4 = 3.2 -8. given the replacement set (2. 3. 4. 5} x = 3 A x = 2

B x = 3

C x = 4

D x = 5

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

Atruck can be rented from company a $50 a day plus $0.60 per mile. company b charges $20 a day plus $0.80 per mile to rent the same truck. find the number of miles in a day at which the rental costs for company a and company b are the same

Can anyone explain to me how to do this? anything will .