Nikki gathered data about the length of time she spent listening to the radio and the number of commercials she heard. she organized the data
in a scatter plot, where x represents the minutes spent listening and y represents the number of commercials. then she used the graphing tool
to find the equation of the line of best fit:
y=0.338x - 1.387.
based on the line of best fit, for approximately how many minutes will nikki need to listen to the radio to hear 20 commercials?

check out this website

you will enjoy it as it give interesting things to look up or do!

50x5=$250

step-by-step explanation:

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116