5) If an item costs $500 and is on sale at 15% off and sales tax on the item is 8% find the cost after the discount has been taken off and the tax has been added.

answer is 459 dollars

explanation: 15% of 500 is 75 that =425 + the tax which is 34 dollars so add them to get the answer 459

for this pair of functions g(x)=x-2 and f(x)=|x| is (g o f)(a)= |a| -2

step-by-step explanation:

g(x)=x-2

f(x)=|x|

(g o f)(a)=?

(g o f)(x)=g(f(x))

(g o f)(x)=g(|x|)

(g o f)(x)=|x|-2

(g o f)(a)=|a|-2

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.