Two mechanics were working on your  car. One can complete the given job in six hours, but the new guy takes  eight hours. They worked togethr er for the first two hours, but then the f irst guy left to help another mecha nic on a different job. How long will it t ake the new guy to finish your car ​

5/6, -1/6, 5/3 i hope this is right. it should be anyway.

1.   an exact solution requires a radical solution - no decimal approximation.2. (a)4x^3 = 756x^3 = 756/4 = 189x =   cube root of 189 =   5.74   to nearest hundredth answer(b)   189 = 3*3*3*7   so we can write the cube root of 189 as 3∛7 answerchecking (a) 4*(5.74^3 =   756.48   which is very close(b)   4* ((3∛3)^3   = 4*189   = 756   - spot on! 3. i would use solution b because the original question asked for an exact solution.