Answer:
The cost of 30 gallons of gas is $74.7.
Step-by-step explanation:
- Given that the price that Tyler pays for gas varies directly with the number of gallons he buys.
- The cost 24 gallons is $59.76 to him.
- Now we need to find the cost of 30 gallons.
- To solve this problem use a direct variation formula.
- Solve for constant variation.
Step 1 of 3
Here we need to find the cost of 30 gallons.
Given that the price that Tyler pays for gas varies directly with the number of gallons he buys.
The cost of 24 gallons is $59.76 to him.
Let, x be the number of gallons and y be the cost or price for gas.
Use the formula for direct variation which is given by y=kx.
Step 2 of 3
Now substitute the value y=$59.76 and x=24.
Put value in y=kx, we get

Substitute value of k is y=kx, we get y=2.49x
Step 3 of 3
Now we need to find the value of y that is the cost for 30 gallons.
Again use direct variation formula y=kx and value of k and x, we get 

Answer:
84 units2
Step-by-step explanation:
First, you multiply 24 *7 = 168
Second, you divide 168 / 2 = 84
Lastly, have a great day!
Answer:
(-1, 3)
Step-by-step explanation:
to solve using substitution, you have to know the value of either x or y. in this example, they gave you the value of y already: y=x+4.
this means you can substitute the y for (x+4). if we substitute y for (x+4) in the equation y=-5x-2, we get this:
(x+4)=-5x-2
then solve for x
6x=-6
so x=-1
since we know the x value, we can solve for y
y=x+4
y=-1+4
y=3
so the final answer is (-1, 3)
Answer:
i think that the correct answer would be A and F
Step-by-step explanation:
so so so so sorry if the answer is wrong
Answer:
It is really easy. First off you just subtract by 3
Step-by-step explanation: 21-3=18 and on.