What is 3+83737299274829927478=

Landon wrote that 3−2.6=4. which statement about his answer is true?

My hour hand points between the 8 and the 9 in 35 minutes it will be the next hour. what time is it ?

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.