He payed a $1.52 for each pound of rice
Answer:
Step-by-step explanation:
Given that x = no of movies high school students watched is N(6.8, 1.8)
Sample size = 36 and hence std error = 1.8/6 = 0.3

(two tailed test)
Mean difference = 6.2-6.8 = -0.6
Test statistic z = -0.6/0.3= -2
p value = 0.02275
Since p <0.05 we reject H0.
There is evidence to show that college students watch fewer movies a month than high school students
Answer:
-9>x
Step-by-step explanation:
5(x+4)>2x-7
5x+20>2x-7
5x+20>2x-7
<u> +7 +7</u>
5x+27>2x
↓
5x+27>2x
<u>-5x -5x</u>
27>-3x
↓
<u>27>-3x </u>
-3 -3
= -9>x
it would be 0, because in the origin equations, the d's cancel out since it's x-x, only 2 would be left, therefore the correct answer is A since 0+2=2