Can some one pls help? Given the explicit formula, identify the first term and the common ratio.

an=4(−3)n−1
First term =

Common Ratio =

The jurassic zoo charges $14 for each adult admission and $5 for each child. the total bill for 77 people from a school trip was $565. how many adults and how many children went to the zoo? i

An eight-sided die, which may or may not be a fair die, has four colors on it; you have been tossing the die for an hour and have recorded the color rolled for each toss. what is the probability you will roll a brown on your next toss of the die? express your answer as a simplified fraction or a decimal rounded to four decimal places.

Find the solution of system of equation y= x-4 y=4x+2