Direct variation is of the form y=kx, where k is the constant of variation. It is "direct" because as x increases/decreases so does y in the same magnitude.
y=kx, In this case the dependent variable y, is miles and the independent variable x, is gallons. We are told that the car gets 28mi/gal so
y=28x
Answer:
15$
Step-by-step explanation:
I'm guessing theres only one friend based on the singular "friend" but if there was more please tell me
so we can do 5-20 = 15 and that 15 is what her friend had.
We can first change 4% to a decimal by dividing by 100:
Then we can multiply this by 3.5km:
So now we know that 4% of 3.5km is 0.14km.
Answer: 66
<u>Step-by-step explanation:</u>
20 points per day is the rate, 100 points is the intial amount, and 1420 points is the total.
Use the formula: y = mx + b
- y is the total
- m is the rate
- b is the initial amount
1420 = 20x + 100 <em>plugged the values into the equation</em>
1320 = 20x <em>subtracted 100 from both sides</em>
66 = x <em>divided both sides by 20</em>
