*WILL GIVE BRAINLIEST* These are complementary angles. Find the angle value of x

A: 30°

B: 17°

C: 73°

D: 100°

PS. it's not 30. i tried and got it incorrect :(

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