Question

shown is a graph of the global average temperature ( t ) during the 20th century.
estimate the following.
(a) the global average temperature (in ( ^circ \text{c} )) in 2000?
( 14.5 ) ( ^circ \text{c} )
(b) the year when the average temperature was ( 14.2^circ \text{c}?
( 1990 ) youre right!
(c) the year when the temperature was smallest.
( 1910 ) great!
the year when the temperature was largest.
( 2000 ) great!
(d) the range of ( t ). (enter your answer using interval notation.)
( 13.5,14.7 )

Explanation:

Step1: Identify min/max T values

From the graph, the lowest temperature (minimum) is approximately $13.5^\circ\text{C}$, and the highest temperature (maximum) is approximately $14.5^\circ\text{C}$ (consistent with the verified 2000 value).

Step2: Write range in interval notation

The range includes all values between the minimum and maximum, inclusive.

Answer:

$[13.5, 14.5]$