Question

A hot air ballon was 240 ft above the ground. It decreased its altitude by 6 1/2 ft per min for 15 min, and the increased its altitude 9 ft. What was the ballon overall change in altitude? Part C what is the hot air ballon elevation. PartnD suppose the hot ail ballon rose another 150 ft. Write an expression to model the situation. Plz o will give you 100 points and mark you brainlest

Answer 1

All you do is multiply 16 1/2*15, since it drops ιи 16 1/2 feet every minute then you must add 9 to it because then they gained 9 feet then all you have to do then is take your answer and subtract it fron 240 feet.

Ok in part c 16 1/2*15=97 1/2 but you still need to add the 9 feet so that becomes 106 1/2. Then you must subtract that from 240 so that then becomes 133 1/2 so the elevation is 133 1/2 Feet

In part D. The equation should be

240-(16 1/2*15)+9(+150)=283 1/2

Answer 2

First Part: Overall change in altitude: -88.5ft

Part C: 151.5ft

Part D: E= 240-(6.5×15)+9
.
.
.

Part ? because:
6.5×15= 97.5 We know that decreases. So it would be, -97.5, next it says it increases by 9ft. So -97.5+9=-88.5ft

Part C becuase: The original elevation is 240, and the elevation is subtracted by 88.5, so...
240-88.5=151.5ft