Step-by-step explanation:

5x[$25.85-($25.85 x 0.10) ] + (5 x 2.50)=$128.83 compared to[ 5 x 27.36( $27.36 x 0.15)]+ 10.00= 126.28 is the least amount.
answer is ------> $126.28
I'd say (a) = 52.5 minutes or 52 minutes and 30 second
(b) = 45 minutes
Answer:
c
Step-by-step explanation:
mass will never change only weight will as weight is dependent on gravitational field strength