Mr. Grant can buy three packs of 10 (3x10=30) or he can buy thirty single packs (30x1=30)

Answer: The domain of (f•g)(x) is all real numbers except for 0

Point A and B of what? Plz show a number line or graph or table or something.
-- DEC is a right triangle.
-- DC is one side of the square = 10 cm
-- EC is half the side of the square = 5 cm
-- DE is the hypotenuse = square root of (5² + 10²) = √(125 cm²) .
<em>-- Truncated</em> to one decimal place, that's 11.1 cm.
<em>-- Rounded</em> to one decimal place, it's 11.2 cm.