Justine enrolls in a music program. the cost of the program includes a one-time registration fee of $45 and a fee of $9 per lesson. if the average cost per music lesson is $12 and justine has taken x classes, which equation represents this scenario? nextreset

Step-by-step explanation:

Given : The cost of the program includes a one-time registration fee of $45 and a fee of $9 per lesson.

To Find: If the average cost per music lesson is $12 and Justine has taken x classes, which equation represents this scenario?

Solution:

Cost of registration = $45

Let x be the number of lessons

Cost of 1 lesson = $ 9

So, Cost of x lessons = 9x

So, Total cost for x lessons= Registration fee + Lessons Fee

                                            =

Now we are given that the average cost per music lesson is $12 .

So,

Hence the equation represents this scenario is  

y = 0.77(x)

step-by-step explanation:

the jacket retains this value after 23% cut or retains 77% of original value. plug original 87 jacket price for x and the remaining value should be y.

an advantage of the standard deviation is that it increases as the dispersion of the data increases. e. the interquartile range is preferred when the data are not skewed or no have outliers. an advantage of the standard deviation is that it uses all the observations in its computation.