Showing your work Write a function rule to model for the cost of having a
plumber to come to fix a broken pipe. Then evaluate
for the given number.

Roto-Rooter charges $45 for the first hour then $20
an hour after that. Find the cost if it takes 5 hours to
fix the broken pipe.

The federal reserve controls certain interest rates in the united states. investors often try to speculate as to whether the federal reserve will raise or lower rates and by how much. suppose a company conducts extensive interviews with financial analysts, and as a result, predicts that "thefed" will increase rates by an average of 0.25 percentage points every six months for the forseeable future. which type of equation could be used to model the predicted interest rates over the next several years, assuming no other significant changes? a) a linear equation b) a quadratic equation c) a polynomial equation d) an exponential equation