Answer:
420 miles
Step-by-step explanation:
you have to subtract the initial cost of the car from $270. That leaves you with $210 remaining to spend on mileage. At a rate of 50 cents per mile you have to determine how many miles it would take to spend $210. At a rate of $1 per mile it would take 210 miles to spend $210 dollars. BUt since each mile is 50 cents and it takes .50 times 2 to make 1, you have the multiply 210 by 2 which equals 420.
Step-by-step explanation:
3x-5+23x-9
26x-5-9=26x-14
2(13x-7)
4x - y = 3
y = 2x + 13
Substitute the second equation into the first equation:
4x - y = 3 [since y = 2x + 13, you can substitute (2x + 13) for "y" in the equation]
4x - (2x + 13) = 3 Distribute/multiply - into (2x + 13)
4x - 2x - 13 = 3
2x - 13 = 3 Add 13 on both sides
2x = 16 Divide 2 on both sides
x = 8
Now that you know x = 8, plug it into one of the equations to find y
y = 2x + 13
y = 2(8) + 13
y = 16 + 13
y = 29
x = 8, y = 29 or (8, 29)
[proof]
4x - y = 3
4(8) - 29 = 3
32 - 29 = 3
3 = 3
y = 2x + 13
29 = 2(8) + 13
29 = 16 + 13
29 = 29
You know that it decreased 42 feet a second, so all you have to do is multiply by 27 to get 1134 feet. Since it's decreasing, it would be represented as a negative number, making the answer D. Next time, take it slow and draw a unit rate, as shown below!
4 quarts = 1 gallon
2 pints = 1 quart —> 8 pints = 4 quarts
2 cups = 1 pint —> 16 cups = 8 pints
Therefore 16 cups are in a gallon
