Answer:
Step-by-step explanation:
Let 
y=2x-10
Switch x and y,
x=2y-10
x+10=2y
(x/2)+5=y
So 
Using proportions, it is found that Mason ran 620 meters.
<h3>What is a proportion?</h3>
A proportion is a fraction of a total amount, and the measures are related using a rule of three.
Considering the ratio, the <em>rule of three</em> is given as follows:
2 laps for Mason - 3 laps for Laney.
n meters for Mason - 930 meters for Mason.
Applying cross multiplication:
3n = 930 x 2
n = 930 x 2/3
n = 620
Mason ran 620 meters.
More can be learned about proportions at brainly.com/question/24372153
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A). because B,C, and D didnt really make any sence
The answer is -21 I just took the test
Answer:
The equation representing the relationships between the cost of laptop and Cole's payment is
.
Step-by-step explanation:
Given:
Cost of laptop = 335
Down payments = $50
Number of equal payments = 
We need to write the equation form the relationships between the cost of laptop and cole's payment.
Solution:
Now we can say that;
Cost of laptop is equal to sum of Down payments and Number of equal payments.
framing in equation form we get;

Hence The equation representing the relationships between the cost of laptop and Cole's payment is
.