Isabel's brother wants to buy a graphing calculator for $100. he already has $30 and saves $5 per week from his allowance. write an equation and solve in order to determine how many weeks ,w, take isabel brother to save enough money for the calculator

James is playing his favorite game at the arcade. after playing the game 3 times, he has 8 tokens remaining. he initially had 20 tokens, and the game costs the same number of tokens each time. the number tt of tokens james has is a function of gg, the number of games he plays

What is the standard deviation of the following data set rounded to the nearest tenth? 3, 17, 18, 15, 12, 21, 9

Find the value of ax 4 ; a = 2, x = 1. select one: a. 2 b. 4 c. 1 d. 8