Amir and Mehdi paint a house together in 6 days. If each of them wants to paint this house alone, Mehdi will finish the job 5 days earlier. How many days will Mehdi finish the job alone?

An indoor painter works for a local contractor to paint rooms in new construction homes. - The painter paints several rooms on Tuesday and paints \( x \) rooms on Wednesday, spending an equal amount of time on each room, What does the value 5 represent in the expression? the cost, in dollars, the painter charges to paint each room the number of rooms the painter paints on Tuesday and Wednesday combined the number of rooms the painter paints on Tuesday only the time, in hours, it takes the painter to paint each room

\[ 3 x-5=-15 \] xpand and simplify \( 3(x+7)-2(x-3) \)

17) \( -8(-5 b+7)+5 b \)

Find the zeros of the polynomial function, and state the multiplicity of each. \( f(x)=x^{7}(x-3)^{2}(x+6) \) The smallest zero is \( \square \) with multiplicity \( \square \).

a) \begin{array}{l}\( x+y=18 \\ x-y=2 \\ \)\hline\end{array}