I think addition property of equality
Answer:
meter is difference in height between the submarine and the aircraft
Step-by-step explanation:
The height of aircraft above the surface
meter
Depth at which the submarine lies below the surface
meter
Depth at which the underwater robotic vehicle below the surface
meter
Difference in height between the submarine and aircraft is equal to
meter
35.75
explanation-
3.90 ph x 7.5 hours = 29. 25
plus the gas can 6.50
29.25+6.50= 35.75