The tax rate as a percent, r, charged on an item can be determined using the formula 100( – 1) = r, where c is the final cost of
the item and p is the price of the item before tax. Louise rewrites the equation to solve for the final cost of the item: c = p(1 + ). What is the final cost of a $40 item after an 8% tax is applied?
<span>The question is asking us to calculate the final cost of the item after the tax is applied. The price of item before the tax is: P = $40 and the tax rate as a percent is 8%. It means that r = 0.08. And the formula is: C = P * ( 1 + r ). Finally: C = $40 * ( 1 + 0.08 ) = $40 * 1.08 = $43.20. Answer: The final cost is $43.20. </span>
Explanation: the slope = rise/run. so if u have two points on the line, count how much it goes up and down divided by how much it goes left and right. so the line goes up 2, left 1, so the slope is 2/1 or 2.
