Zach needs a new pair of running shoes. The pair that he wants regularly sells for $129.If they are on sale for 24% off, how much will he pay in total if sales tax is 6.4%?

$104.31

Step-by-step explanation:

First let's calculate the sale price of the shoes. If they are 24% off, that means they will be worth 76% of the initial price. So, we can multiply 76% by 129 to find the sale price:

129 * 0.76 = 98.04

The sale price is $98.04. To find the value of the sales tax, multiply the sale price by the percentage of the sales tax:

98.04 * 0.064 = 6.27456

The sales tax rounds to 6.27. Finally, to find the total price, add the value of the sales tax to the sale price:

98.04 + 6.27 = 104.31

The total price Zach will pay is $104.31.

Hope this helps :)

(5x-1)^2= (5x)^2-2(5x)×1+(1)^2=25x^2-10x+1