15.5% is the same as 15.5/100 or 155/1000, which you can take a 5 out of.
After that, you will get 31/200
If we put the value of X as 0 we will get the answer zero, So I guess the value of X as 0 will make sense.
Answer:
y = -0.5x + 4
Step-by-step explanation:
y = mx + c
m = gradient
= (change in y) ÷ (change in x)
= -1/2
c = y intercept
= 4
We need to set up an equation to solve this problem. The sales tax is a percentage of the total, so that's what we are looking for.
Let's call S our sales tax
So, that's what we are looking for, and we are given the actual sales tax
So now we have a decimal. In order to convert a decimal into a percentage, we must multiply by 100 (since percentages are out of 100)
The sales tax rate is 3.8%
Divide -5/8 by .5 which is uhmm..