Please be kind enough to help me with this question in my geometry test thank you i’m very grateful

A bookstore sells used books at 40% discount off the regular price of the book when it was new. The price of a used book is 18$.

masha68 [24]

Answer:

The regular price was $30.

Step-by-step explanation:

The bookstore sells used books at 40% discount off the price of new books. This means, after the discount, the price of a used book will be 100% - 40% = 60% of the original price.

Now, if the price of the used book is $18, we know that is is 60% of the price of the book when it was new.

Let us call $x$ , the price of the book when it was new, then we know that

$0.6x=18$ <em>(this says that 60% of the original price is $18.</em><em>)</em>

We solve for $x$ and get

$x=\frac{18}{0.6} =30.$

The price of the book was $30 when it was new.

3 0

3 years ago

ANSWER ASAP WILL MARK BRAINLIEST!!!!!

MissTica

Part 1)

Step-by-step explanation:

If you are mentioning about the window view on the graphing calculator, then you must be note that viewing window is the part of the coordinate plane that would be visible on the screen of your graphing calculator.

If you are just viewing only a small portion of entire graph, just think of your calculator screen as a magnifying glass, enabling you to view you a piece of the entire graph.

The size of the coordinate plane is interpreted by Xmin, Xmax, Ymin, and Ymax, as seen at the left.

The zoom setting should be such that you can get the decent range for the x-values and y-values to determine the solution.

The Zoom setting 'Zstandard' is normally 10 x 10 window which is large enough to display the appropriate portion of the graph.

"ZFit" - recalculates Ymin and Ymax using current x-values to show best possible graph. The range gets adjusted so that the function will enter the window at a corner on the left side.

Part 2) Determining the solution of $x\:+\:4y\:=\:26;\:3x\:-\:4y\:=\:30$