1. plumbing: aaa plumbing charges $60 per hour plus a $100 travel charge
for a service call. rooter plumbing charges $80 per hour and no travel fee.
how long must the service call be for each to charge the same amount?

Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.

The construction of copying qpr is started below. the next step is to set the width of the compass to the length of ab. how does this step ensure that a new angle will be congruent to the original angle?

How many and of which kind of roots does the equation f(x)=x3−x2−x+1