Jack and Fred have to do a certain job. If Jack works alone he can finish the job in 3 hours. If Fred works alone he can finish the job in y hours. The two of them can finish
the job in 2 hours if they work together. What is the value of y?

Whit h equation best represents this situation the number 98 increased by an unknown number equal to 120

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.

Find the measurement of angle b in the following triangle