Tyler trades in a car worth $5,000 (wholesale) on a new $15,000 car, but still owes $7,000 on his old car. how much will he owe on his new car?

He owes $17,000 on his new car.

Explanation: Because Tyler traded his car which was worth $5,000 on a $15,000 car this would decrease the cost by $5,000 due to the car he traded in, but since he still owed $7,000 on the car that he traded in he will still have to pay that off, which was grouped into the bill of the new car that he bought.  

it is a requirement to graduate high school where i live

the answer to your question would be something called hertz. the unit of measurement called a hertz, which is one cycle per second, is used to measure clock speed. within one cycle, your computer processes, refreshes, or updates itself to the changes that it is going through. in the case of computer clock speed, one hertz equals one tick per second. the clock speed of computers is usually measured in megahertz (mhz) or gigahertz (ghz)