Answer:
Sarah bought 30 pencils
Step-by-step explanation:
1. Let define p, as the number of pencils bought, and m, as the number of markers bought.
2.
3. Substitute p in the first equation to 3m since p=3m as defined.
plug m into equation p=3m to find the number of pencils bought
Answer:
2
4
6
8
3
6
9
12
Step-by-step explanation:
domain is the x of ordered pair or the first number in ordered pair (number on x-axis)
range is the y of ordered pair or the second number in ordered pair (number on y-axis)
To solve this problem you can apply the following rule of three:
$ 1,435 ---> 100%
$ 1,595 ---> x
Clearing x we have:
x = ((1595) / (1435)) * (100)
x = 111.1498258
Then, the difference is:
111.1498258 - 100 = 11.14982578%
hundredths of a percent:
11.15%
Answer:
the dealer's price from the Blue Book: It is 11.15%
Answer:
-4x - 3 = -8
Step-by-step explanation:
On our left, we have -x in 4 places = 4(-x) = -4x
And on the left, we also have -1 in 3 places = 3(-1) = -3
Altogether in our left, we have: -4x +(-3)
That is: -4x - 3
On our right, we have -1 in 8 places, which is 8(-1) = -8
Therefore, the equation that represents the model would be:
-4x - 3 = -8
Set it into proportions.
$0.40/0.25 miles = x/15 miles
And then solve the proportion.
0.25*x = 0.40*15
0.25x = 6
0.25x/0.25 = 6/0.25
x=24
Therefore, Emily's mother donates $24 if she bikes 15 miles.
