£690 is shared between Kerry, Laura, Mandy and Natalie. The ratio of the amount Kerry gets to the amount Laura gets is 4:7 Mandy and Natalie each get 1.5 times the amount Kerry gets. Work out the amount of money that Laura gets.

[10 points, algebra 2-simplifying complex fractions]according to my answer key the restrictions are -1 and 4. but why not positive 1?

Change negative exponents to positive. then solve. round to four decimal places

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.