math 115
posted by Lea .
1.evalute the expression 8 + 15 = 7 is this answer correct?
2.evaluate the expression 19+(+4) = 23 is this answer correct?
3.Evaluate the expression (13) (4) (6) = 312 is this answer correct?
4. evaluate 10+ 2 =8 is

1,2,3 correct.
4) abs(2)= +2 
2+42=4