Acadia bought an MP3 player at Everywhere Electronics for $350 and its valued depreciated linearly. Three years later, she saw the same MP3 player at the same store for $125. What is the amount of yearly depreciation of Acadia's MP3 player?

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is

What is the volume of a cone with a height of 6 cm in the radius of 2 cm

What is the value of x in the equation 1.5x+4-3=4.5(x-2)?