What is the twentieth term of the arithmetic sequence 21, 18, 15, 12, ?

1

78

-39

-36

How to write 3 tenths and 5 tenths as a decimal

According to a study conducted in 2015, 18% of shoppers said that they prefer to buy generic instead of name-brand products. suppose that in a recent sample of 1500 shoppers, 315 stated that they prefer to buy generic instead of name-brand products. at a 5% significance level, can you conclude that the proportion of all shoppers who currently prefer to buy generic instead of name-brand products is higher than .18? use both the p-value and the critical-value approaches.

Y=x+2 4x+3y= -36 system of equation