Step-by-step explanation:
the answer is
........b
A: x= 6+3 squareroot 10 ... Its letter A
68.8% is your answer
when changing a decimal to a percentage, move the decimal point twice over
hope this helps
30 divided by 5 is 6, so the other term is (x+6). (x+5)(x+6) becomes x^2+11x+30, so k is equal to 11.