Allam just finished a great meal at a restaurant in wisconsin. the sales tax in wisconsin is 5%, and it is
customary to leave a tip of 15% for the server. the tip amount is calculated on the price of the meal before the
tax is applied. (sales tax is not calculated on tips.)
if allam ordered a $15 meal, how much money will he have to pay with tax and tip?

$18

Step-by-step explanation:

$15 for meal

15% for tip = $2.25

5% sales tax = $0.75

Total cost of eating $18

the polynomial is a perfect square trinomial of the form a^2-2ab+b^2:

option a. true

step-by-step explanation:

9x^2-12x+4

comparing with the form a^2-2ab+b^2

1.) a^2=9x^2

solving for a: square root both sides of the equation:

sqrt(a^2)=sqrt(9x^2)

a=sqrt(9) sqrt(x^2)

a=3x

2.) b^2=4

solving for b: square root both sides of the equation:

sqrt(b^2)=sqrt(4)

b=2

to be a perfet square trinomial 2ab must be equal to 12x. let's check:

2ab = 2 (3x) (2)

2ab = 12x

correct