No, AB+ people can receive blood from all blood groups.
Blood minus the formed elements; red blood cells, white blood cells, and platelets.
The blood serum is created with the blood plasma alone minus the platelets, blood cells and fibrinogen.
Serum Serum
The term "minus money" could indicate money that was lost or spent. You could say you have minus money if you wrote a check for more money than was in your account.
While blood without cells is called plasma.
Yes - AB Parent has genotype IA IB . If the parent with B blood has the genotype IBi, which is entirely possible, then there is a chance that the baby would be IAi, and would have type A blood. Plus/minus has to do with the RH factor in blood, so you can't tell from the information given whether the baby could be "plus". If one of the parents is RH+, the baby could be as well.
The serum.
7% plus or minus 1%
I think it makes a + but be sure to check fist, I could be wrong
A square root.
80 plus or minus 15.
The best i could come up with is 'subtracted'. There is no past tense of 'minus'. well,,,,,,,whereas i think "minus" can not be used as a verb.