David's family rented a boat for a flat fee of $20 plus an hourly, X. David's family rented the boat for 4 hours. The equation 4x + 20 = 60 represents, in dollars, what David's family paid for renting the boat. What is the hourly rate for renting the boat?

Which statement is always true? a negative exponent cannot be part of an expression's numerator. a negative base raised to the power of 2 has a negative value. a negative base raised to the power of 2 has a positive value. any number to the first power is zero.

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.

Which graph has figures that can undergo a similarity transformation to justify that they are similar? (obviously not the third one)