Abigail is 8 years older than Cynthia. Twenty years ago Abigail was three times as old as Cynthia was. How old is each of them now?
Plz explain

An energy plant is looking into putting in a system to remove harmful pollutants from its emissions going into earth's atmosphere. the cost of removing the pollutants can be modeled using the function c = 25000p/100 -p what is the vertical asymptote?

Marlow is comparing the prices of two trucks rental compaines company a charges $3 per hour and an addtional $75 as serivce charges company b charges $2 per hour and an additional $85 as serivce charges

In parallelogram abcd the ratio of ab to bcis 5: 3. if the perimeter of abcd is 32 find ab