Gaetano spent $37.80, including tax, on a pair of jeans. how much did the jeans cost with an 8% sales tax? write and solve an answer for this problem.

Which function has the domain x> -11?

Data for the height of a model rocket launch in the air over time are shown in the table. darryl predicted that the height of the rocket at 8 seconds would be about 93 meters. did darryl make a good prediction? yes, the data are best modeled by a quadratic function. the value of the function at 8 seconds is about 93 meters. yes, the data are best modeled by a linear function. the first differences are constant, so about 93 meters at 8 seconds is reasonable. no, the data are exponential. a better prediction is 150 meters. no, the data are best modeled by a cubic function. a better prediction is 100 meters.

Lines a and b are perpendicular. the equation of line a is y=13x+3. what is the equation of line b?