Some rational numbers are integers. True or false

The radius of a circle and its circumference.
Direct or inverse

f(x) 0.08x^3 + 0.6x + 2.8

Rational function, another polynomial function
Quadratic function.

1 answer

Some rational numbers are integers.
(all I need is one example)

fraction--- 6/2
ineger ---- 2
is 6/2 = 2 ?

The circumference of a circle varies directly with its radius

f(x) = .08x^3 + .6x + 2.8
- certainly not a quadratic , (I see a cub)
- I certainly don't see any variables in a denominator
mmmhhh?
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