Jaena is purchasing a new pair of shoes that coast $89. She has a coupon for $10 and a the shoes are marked 12% off. She is allowed to use the coupon and the 12% discount. How should she use the coupon and discount (what order) to get the lowest sales price? Explain your reasoning.

She should apply the discount first.

Step-by-step explanation:

Giving the following information:

Selling price= $89

Discount rate= 12%

Coupon= $10

When you apply a percentage to increase or decrease a nominal number, the higher the number bigger the percentage. Therefore, first, we need to apply the percentage discount and the coupon.

We will demonstrate:

Discount percentage first:

Discount= 89*0.12= $10.68

Coupon= $10

Purchase price= 89 - 10.68 - 10

Purchase price= $68.32

Coupon first:

Coupon= $10

Discount= (89 - 10)*0.12= $9.48

Purchase price= 89 - 10 - 9.48

Purchase price= $69.52

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

answer:

f(5/2) = 10/3

i hope this you!

well my understanding of this question is they want you to use the y=14.1x -2.3 and put the coordinates they gave you onto the line segment of   y=14.1x -2.3

step-by-step explanation: