Keelah's clothing store buys coats for $50 and then sells them for$80. what is the percent of mark up on the price of the coat

The total number of photos on hannah’s camera is a linear function of how long she was in rome. she already had 44 photos on her camera when she arrived. then she took 24 photos each day for 6 days. what is the rate of change of the linear function that represents this

Which ordered pair is a solution to the system of linear equations? 2x + 3y= 6 –3x + 5y = 10

Find the cocordinatse of the point on y axis which is nearest to the point (-2,5)