Identify the sequence graphed below and the average rate of change from n = 1 to n = 3.

coordinate plane showing the point 2, 10, point 3, 5, point 4, 2.5, and point 5, 1.25

an = 20(one half)n − 1; average rate of change is fifteen halves
an = 10(one half)n − 1; average rate of change is fifteen halves
an = 20(one half)n − 1; average rate of change is negative fifteen halves
an = 10(one half)n − 1; average rate of change is negative fifteen halves

Yuto and hila attempted to solve the same inequality. their work is shown below. which statement is true about the work shown above? yuto is correct because he isolated the variable correctly and reversed the inequality symbol. yuto is incorrect because he should not have reversed the inequality symbol. hila is correct because she isolated the variable correctly and reversed the inequality symbol. hila is incorrect because she should not have reversed the inequality symbol.