23 The foot of a mountain is at sea level.
The temperature at the foot of the mountain was 16 °C.
The temperature at a height of 3000 m on the mountain was – 4 °C.
(a) Find the difference between these temperatures.
(b) Given that the temperature fell at a constant rate, find
(i) the temperature at a height of 900 m,
(ii) the height at which the temperature was 0 °C,
(iii) an expression, in terms of x, for the temperature, in °C, at a height of x metres.
PLEASE HELP
The temperature at the foot of the mountain was 16 °C.
The temperature at a height of 3000 m on the mountain was – 4 °C.
(a) Find the difference between these temperatures.
(b) Given that the temperature fell at a constant rate, find
(i) the temperature at a height of 900 m,
(ii) the height at which the temperature was 0 °C,
(iii) an expression, in terms of x, for the temperature, in °C, at a height of x metres.
PLEASE HELP