andrew has a box which contains 4 pink blocks, 5 yellow blocks, and 6 green blocks. he picks one block, records its color and puts it back in the box. he then draws another block. what is the probability of taking out a yellow block followed by pink block?

Ineed to know the answer to this algebra question.

Dean and karlene get paid to write songs. dean is paid a one-time fee of $20 plus $80 per day. karlene is paid a one-time fee of $25 plus $100 per day. write an expression to represent how much a producer will pay to hire both to work the same number of days on a song.

At your job you're paid $50 per week plus $3 per sale at least how many saled do you need to make in order to have over $250