Nick o’ time, the plumber, charges $30 per hour. his brother ivan, the plumber’s , charges $20 per hour. nick starts working on a job. four hours later ivan joins him and both work until the job is finished. if they make a total of $470, how long did they work together?

What are “like terms”? why can we only add like terms?

Afamily has five members. a mom, a dad, two sisters, & a brother. the family lines up single file. what is the probabillity that the mom is at the front of the line

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