(75 points). how do you solve quadratic-quadratic systems? describe the steps of how to do it with an example. i can't find any real information on how to solve them. (below is an example of what i need to solve to pass my test).

On average, how many more hits will he get when he bats 100 times at home during the day as opposed to 100 times away at night?

Jabari is power washing houses for a summer job. for every job, he charges an initial fee plus $30 for each hour of work. his total fee for a 4 -hour job, for instance, is $170 . jabari's total fee,f, for a single job is a function of the number,t, of hours it takes him to complete the job. write the function's formula.

Average acceleration: i have no idea how to do this.