Problem 1
the laboratory chemicals were very sensitive to heat, so the supervision installed alarms to alert the staff is the temperature rose above 72 degrees or below 60 degrees.
write as a compound inequality to show when the alarm will sound.

The correct graph is the second one, with the points being at (-6,0), (2,0) and reaching down to (-2,-8)

At a constant it will take one hour to travel 32 mi.at that speed it will take 1/2 hr to travel the remaining 16 mi.it will take 1+1/2 hr to travel the 48mi @ 32mph.so 1 hr = 60 min& 1/2 hr = 30 min1+1/2 hr = 90 min.there are 60s in each 90 × 60 = 3600 seconds.the real question seriously is he why are they driving so slow? ! lol.