Ryan has one less than four times the number of songs on his ipod that olivia has. in total thay have 469 songs. how many songs does olivia have

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.

Which one is true about the hexagons ?

Twelve less than a number is at most 20