11 divide both sides by -1
2 times 140 is 280
Or
4 times 70 is also 280
The cost of the knee pad is $18.
<u>Step-by-step explanation:</u>
It is given that,
The total cost of a skates and knee pads is $63.
Therefore, Total cost = cost of skates + cost of knee pads.
We know that, the cost of the skates is $45.
<u>To find the cost of the knee pads :</u>
Let 'x' be the cost of the knee pads.
The equation is framed with the variable 'x' that gives the cost of the knee pad.
The equation is 63 = 45 + x.
<u>To find the value of x :</u>
The first step is to subtract 45 from both sides of the equation.
⇒ 63-45 = 45+x-45
⇒ 18 = x
⇒ x = 18 dollars.
The cost of the knee pad is $18.
Answer: 
Step-by-step explanation:
The exponential function will have this form:

We know that the function passes through the points
and
. Then, we can substitute the coordinates of the point
into
and solve for "a":

Then, we know that:

Now, we neeed to substitute the coordinates of the second point
into
and solve for "b":

Substituting the value of "b" into
we can find "a":

Therefore, we get that the exponential function that describes the graph, is:

<h3>
<u>Required</u><u> Answer</u><u>:</u><u>-</u></h3>
Here the height and length are the sides of the rectangular wall and we have to find the area.
Area of rectangle is given by:

where l is the length and b is the breadth/width according to the question. Plugging the given values:


<h3>
<u>Hence:</u><u>-</u></h3>
The area of the wall is <u>1</u><u>0</u><u>5</u><u>6</u><u>0</u><u> </u><u>inch²</u>