Assuming the tax is on the sale price... .4*68 = 27.2 which is how much the discount is. 68-27.2= 40.8 which is the sale price. 40.8*.07 = 2.856 40.8+2.856 = 43.656 is the total cost, with rounding 43.66.

Assuming the tax is on the sale price... .4*68 = 27.2 which is how much the discount is. 68-27.2= 40.8 which is the sale price. 40.8*.07 = 2.856 40.8+2.856 = 43.656 is the total cost, with rounding 43.66.

Nico's investment at each rate (answer)

x = how much money Nico invests at 9%. x*.09 is how much would be returned at the 9% rate. (x-2100)*.08 is how much would be returned at the 8% rate. x*.09+(x-2100)*.08 is how much would be returned total because we added the product of the...

Parallel lines have the same slope, so the slope of the equation you are looking for would be 2/3. The only information missing now is the y-intercept. The slope of the line you are looking for is 2/3: slope represents rise/run or another way to say it is for every 3 points the line moves to...

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