The original price of a pair of shoes is $42. The sale price 20% off the orginal price. Sales tax of 7% is added to the sale price. What is the final cost of the pair of shoes? Roundto the nearest cent​

$8.40 is the amount to be subtracted from the $42.00. If you multiply 20% (.20) by $42.00 you get $8.40. To get your final price subtract $8.40 from $42.00 to get you final answer. I hope that helps.

Step-by-step explanation:

$35.95

Step-by-step explanation:

Since 20% is taken off, that means the sale price is 80% of the original price

42 x . 8 = 33.6

Now, we have to add the sales tax to the new price, 7%

33.6 x 1.07 = 35.952

Another-but longer-way to add sales tax is this:

33.6 x .07 = 2.352

2.352 + 33.6 = 35.952

step-by-step explanation:

let

we know that

the y-intercept is the y-coordinate of the point when the value of x is equal to zero

so

the y-coordinate of the point a is the y-intercept

the answer part a) is

the value of y-intercept is

part b) find the slope m

we know that

the value of the slope is equal to

substitute the values

therefore

the answer part b) is

the value of the slope is equal to

the general answer is

the slope is

the value of y-intercept is