A weather balloon is sent up to measure the air pressure, temperature, and dew point at a particular location. It radios back

Question

A weather balloon is sent up to measure the air pressure, temperature, and dew point at a particular location. It radios back the following information:

Time (s)   Altitude (ft)   Pressure (mb)   Temp °C  Dew Pt °C

0             ground level        1005             18.8            8
360             2 800                923             23.6             3
650             4 700                848             21.2             1
1400           9 800               678             11.0           -12
2750         19 700              498             -3.1            -24
3600         24 800             304             -19.8           -39

a. What is the average rate of change of the altitude with respect to time, △A/△t, from t=0 to t=2750?
b. What is the average rate of change of the pressure with respect to time, △P/△t, from t = 650 to t = 3600?
c. What is the average rate of change of the temperature with respect to time, △Temp/△t, from t = 2750 to t = 3600?
d. What is the average rate of change of the temperature changing with respect to the altitude from t = 0 to t = 2750?

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