Define f: r → r by the rule f(x) = 4x – 1. a) prove that f(x) is one-to-one. (3 marks) b) prove that f(x) is onto. (3 marks)

The gades foundation and hbm corporation are eager to donate generously to their favorite charities. the gades foundation donated $250 in the first month, and each month afterward their cumulative donation total increases by 100$ the hbm corporation donated $64, in the first month, and each month afterward their cumulative donation total increases by 75%. in which month will the hbm corporation's cumulative donation total first exceed the gades foundations' cumulative donation total?

Jim makes $10.35 per hour. write an equation that jim can use to calculate his pay.

1. during first 10 seconds 2. between 10 seconds and 35 seconds 3. during 35 seconds to 40 seconds