The appropriate choice is
Polynomial B. -3x⁴ +5x³ +5
_____
C and D are not trinomials. (They have 4 terms, not 3.) A is 5th degree, not 4th.
Midpoint formula ((x1+x2)/2, (y1+y2)/2)
((4+10)/2, (2+4)/2)
answer is (7,3)
16b +5c -10 -8c +2b
18b - 3c -10
Decimal: 5.0
Fraction: 5/1
The answer to the question is 0.44
