Let f(x) be y so you have
y=7x-13
Reverse the signs of x and y so you have
x=7y-13
And then find the value of y
x+13=7y
(x+13)/7=y
And change y to f(x)-1
First, you would need to create an equation for this problem. Let x represent the unknown tax.

=

Next, you would cross multiply.
100x = 52.5
Now, all you would have to do is isolate the x. To do this, you would divide both sides by 100.
x = $0.525I hope this helps!
It is a right triangle, angle bmw
Answer: $4.55
Step-by-step explanation:
Just subtract $10.00 from $5.45 and you will get $4.55
Here’s one.
Matt was gifted $200 from his parents for his birthday. His friend gave him $100. How much money does Matt have now?
200+100=300
Matt has $300.