In 6 months, they will have same amount of money.
Step-by-step explanation:
Let,
x be the number of months
Given,
Joe's savings = $200
Per month deposit = $50
J(x)=200+50x Eqn 1
Kathy savings = $50
Per month deposit = $75
K(x)=50+75x Eqn 2
For same amount;
J(x)=K(x)
Dividing both sides by -25;
In 6 months, they will have same amount of money.
Keywords: functions, division
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Answer:
The price of the regular gasoline is $2.46, while the premium is $2.67.
Step-by-step explanation:
Let the price of regular gasoline be "x", while the price for the premium be "y", The sum of the amount of each type of gas multiplied by its cost should be equal to the total paid, therefore:
We also know that the premium gas costs 0.21 more than the regular one, therefore:
We can apply the second expression on the first, in order to solve for "x".
The price of the regular gasoline is $2.46, while the premium is $2.67.