© 1999 T
EXAS
I
NSTRUMENTS
I
NCORPORATED
TI-30X ÙS: A Guide for Teachers
38
Negative Numbers
M
The temperature in Utah was L3¡ C
at 6:00 a.m. By 10:00 a.m. the
temperature had risen 12¡ C. What
was the temperature at 10:00 a.m.?
Press Display
M 3 T 12
<
-
3+12
'
9.
DEG
