In the step by step simplification of expression below which property is not used?
3(1+x)
3(x+1)
3(x)+3(1)
3x +3
a) associative b) commutative c) distributive d) identity

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?

What is the difference between the predicted value and the actual value

In the sixth grade 13 out of 20 students have a dog if there are 152 sixth grade students how many of them have a dog