Explain identities and no Solutions

Notebooks cost $1.20 each. This weekend they will be on sale for $0.80. What percentage is the sale? Answer to the nearest whole number. i dont get it!

the perimeter of a rectangle is 304 cm. the length is 40 cm longer than the width. find the length and width

the smith family is driving to a vacation spot the number of miles they have left is 540-60x where x represents the number of driving hours what does 60x represent

Four employees of Papa Tony's Pizza are cleaning up at the end of a busy night. There is a list of 43 clean-up tasks that need to be completed. If each employee does the same number of tasks, how many tasks should each employee do? Solve.

What is the residual value at x=3 given the equation y=-.23x+5 and the table below

A plane traveling from phoenix to san Francisco with a tailwind of 35 miles per hour takes 2.5 hours. returning with the headwind it takes the same plane 2 hours and 45 minutes. what is the average speed of the plane in calm conditions?

Mildred bought 2-cent stamps, 4-cent stamps, and 5-cent stamps for $4.35. The number of 2-cent stamps exceeded the number of 5 cent stamps by 50. The number of 4-cent stamps was 10 less than twice the number of 5-cent stamps.

How to solve ([120-2 + (46-15) + 2] - (9+4)

Bridget needs an actor. Actor a is offering her services for an initial $285 in an addition to $45 per day. Actor B is offering her services for an initial $240 in an addition to pay $50 per day.

3/5x + 5 = 4/5 solve for x