An mp3 player costs $80. a student has a coupon for 1 4 off. the student saves $7 per week. assuming the price of the mp3 player does not change, how long will it take the student to save enough to buy it?

Given f(t) = 282 - 53 +1, determine the function value f(2). do not include f(z) = in your answer

The ksp expression for the system pbcl2(s) pb+2(aq) + 2 cl-(aq) is: [pbc12][pb+2][2cl-] [pb+2][cl-]2 [pb+2][2cl-]2 [pbcl2][pb+2][cl-]2 [pb+2][2cl-]2[pbcl2]

Tim's phone service charges $26.39 plus an additional $0.21 for each text message sent per month. if tim's phone bill was $31.64, which equation could be used to find how many text messages, x, tim sent last month?