Answer: $166.25
Step-by-step explanation:
$20 x 10 weeks = $200
$ 6.75 x 5 days = $33.75
$200 - $33.75 = $166.25
f(x) = 6-5x
y = 6-5x .... replace f(x) with y
x = 6-5y .... swap x and y; solve for y
x+5y = 6
5y = 6-x
y = (6-x)/5
... replace y with the inverse function notation
<h3>
Answer: Choice D.</h3>
The mathematically expression of the given above is,
(x^1/5)(x^1/5)(x^1/5)(x^1/5)
For the same variable involved in the operation multiplication, the exponents should be added. Thus, the answer is,
x^4/5
or x to the 4 over fifth power. The answer is letter B.