Answer:
There is gonna be about 12 Crew Members
A.-3, B.4; the definition of integer is a who number. Fractions are not whole numbers (the fractions in choice C and D) while fractions are not whole numbers, negative numbers are still numbers.
since it is a quadrilateral, all the sides will add to 360. If two angles are 90, and one is 99, add them and subtract from 360. The last angle should be 81 degrees.
