Al and sal are twins. al is given a fifteen-year annuity with end-of-year payments. the first payment al receives, precisely one year from the date he is given the annuity, is for $100, and then subsequent payments decrease by 4% annually. sal is given an nyear level annuity that has the same present value as al’s when the present values are calculated using i = 5%. again calculated using i = 5%, the accumulated value at the end of n years of sal’s annuity is $1,626.29. find the common present value of the two annuities and then find n.

Caleb construction (cc) incurs supervisor salaries expense in the construction of homes. if cc manufactures 100 homes in a year, fixed supervisor salaries will be $400,000. with the current construction supervisors, cc's productive capacity is 150 homes in a year. however, if cc is contracts to build more than 150 homes per year, it will need to hire additional supervisors, which are hired as full-time rather than temporary employees. cc's productive capacity would then become 200 homes per year, and salaries expense would increase to $470,000. how would cc’s salaries expense be properly classified? fixed variable mixed stepped curvilinear