Answer:
The temperature at the base camp Friday evening is - 6 degrees Celsius.
Step-by-step explanation:
To get the temperature at a mountain base camp on Friday evening, we must translate statement into a mathematical form:
(i) The temperature at a moutain base camp was - 2 degress Celsius on Thursday:
[tex]T_{o} = -2\,^{\circ}C[/tex]
(ii) Friday morning, the temperature was 1 degree Celsius lower than it was on Thursday:
[tex]\Delta T_{1} = -1\,^{\circ}C[/tex]
(iii) Friday evening, the temperature was 3 degrees Celsius lower that it was that morning:
[tex]\Delta T_{2} = -3\,^{\circ}C[/tex]
The temperature at the base camp Friday evening is:
[tex]T = T_{o}+\Delta T_{1}+\Delta T_{2}[/tex]
[tex]T = -2\,^{\circ}C-1\,^{\circ}C-3\,^{\circ}C[/tex]
[tex]T = -6\,^{\circ}C[/tex]
The temperature at the base camp Friday evening is - 6 degrees Celsius.
