Wilma can mow a lawn in 80 mintues. melissa can mow the same lawn in 120 minutes. how long does it take for both wilma and melissa to mow the lawn if they working together ?

Identify the expression equivalent to 4(x + x + 7) − 2x + 8 − 4 by substituting x = 1 and x = 2.

Since we have computer algebra systems that can solve polynomial division problems for us, why is it necessary to learn how to do these things by hand?

System of two linear inequalities is graphed as shown, where the solution region is shaded. complete the sentences below by determining whether each point is, or is not, located in the solution region. the point (-3,2) located in the solution region. the point (-7,5) located in the solution region. the point (2,-5) located in the solution region. the point (-14,6) located in the solution region.