Step-by-step explanation:
2x + 1 = 16
2x = 15 (subtract 1 on both sides)
x = 7.5 (divide 2 om both sides)
Since 7.5 is not an integer, (a) is No.
However 7.5 is rational, therefore (b) is Yes.
True.
Since

,

and the solutions are decreasing functions.
Step-by-step explanation:
the answer is 8q^6r^3 and here are the steps in pic.