Sacar el dominio y recorrido de las siguientes funciones

f(x)x+2x

f(x)x+2x−1

f(x)xx2−2x

f(x)x+2x−3

Given the choice between receiving $1.000.000 in one month or a single penny-doubled everyday for the period of one month; which option would you choice? show your work to support your answer. (assume that 1 month=30 days)

Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.