Grady marks down some $3.59 pens to $3.09 for a week and then makes them back up to $3.59. find the
percent of increase and the percent of decrease to the nearest tenth, are the percents of change the same
for both price changes? if not, which is a greater change? complete the explanation, and round your
percents to the nearest tenth.
the first change was (select of
9. the two percent changes select
greater
% and the second change was (select) of
the same, and the select) percent change is

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

step-by-step explanation:

answer: i could not see part the question so ill explain how to get the answer

step-by-step explanation: for instance the distance she travele d is 10 and she traveled the same amout each mile so do 10 divided by how many miles she drove each time and you ge your answer.

the answer is a and d