If workers were able to pave 1/3 of your driveway in 40 minutes if they work at same rate what portion of driveway will they pave in one hour

What is the slope of a line that is perpendicular to y = 3x + 1

Which function has an inverse function? a.f(x)= |x+3|/5 b. f(x)= x^5-3 c. f(x)= x^4/7+27 d. f(x)= 1/x²

Campus rentals rents 2 and 3 bedrooms apartments for $700 ans $900 a month respectively. last month they had six vacant apartments and reported $4600 in lost rent. how many of each type of apartment were vacant?