Teddy buys a new television that was orignally priced $399 and on sale for %15 off. How much money did he save? What was the new price of the tv?

Teddy saved $

The new price of the tv is $

Step-by-step explanation:

To find out how much the new price of the tv is you need to do as follows:

We know that it was 15% off meaning it keeps 85% of its value. Knowing this we do

This gives us

To find out how much he saves, we find the difference:

Teddy saves:

step-by-step explanation:

let

we know that

the y-intercept is the y-coordinate of the point when the value of x is equal to zero

so

the y-coordinate of the point a is the y-intercept

the answer part a) is

the value of y-intercept is

part b) find the slope m

we know that

the value of the slope is equal to

substitute the values

therefore

the answer part b) is

the value of the slope is equal to

the general answer is

the slope is

the value of y-intercept is

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