A commuter has $345 in his commuter savings account. This account changes by -$15 each week he buys a ticket. In one time period, the account changed by -$240.
a. For how many weeks did the commuter buy tickets?

b. How much must he add to his account if he wants to have 20 weeks’ worth of tickets in his account?

Suppose there is a simple index of three stocks, stock abc, stock xyz, and stock qrs. stock abc opens on day 1 with 4000 shares at $3.15 per share. stock xyz opens on day 1 with 5000 shares at $4.30 per share. stock qrs opens on day 1 with 6000 shares at $4.60 per share. the price of stock abc on day 8 begins at $3.50. the price of stock xyz on day 8 begins at $3.90. stock qrs opens on day 8 with a price of $4.50 per share. assume that each stock has the same number of shares that it opened with on day 1. what is the rate of change of this simple index over 1 week?

Listed in the table is the percentage of students who chose each kind of juice at lunchtime. use the table to determine the measure of the central angle you would draw to represent orange juice in a circle graph

What is the location of point g, which partitions the directed line segment from d to f into a 5: 4 ratio? –1 0 2 3