Recently, a random sample of 13-18 year olds was asked, "How much do you currently have in savings? The data in the table represent the responses to the survey. Approximate the mean and standard deviation amount of
savings
B
e ck the icon to view the frequency distribution for the amount of savings
The sample mean amount of savings is 5
Round to the nearest dollar as needed)

the answer is 37

step-by-step explanation:

f(x)=4

step-by-step explanation:

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