Find an equation of the line containing the centers of the two circles whose equations are given below. x2+y2−2x+4y+1
=0
x2+y2+4x+2y+4
=0

Find the zeros of the function. write the smaller solution first, and the larger solution second f(x)= (x+6)^2-49

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.

10 ! in a race, nick is 50 feet in front of jay after ten seconds. how fast can nick run, if jay can run 20 feet per second?