Answer:
Sara expect the better grade for Math class.
Step-by-step explanation:
Consider the provided information.
On the Math exam, the mean was µ = 30 with s = 5, and Sarah had a score of X = 45.
Z score for Math: 



On the Spanish exam, the mean was µ = 60 with s = 8 and Sarah had a score of X = 68.
Z score for Spanish: 



On the English exam, the mean was µ = 70 with s = 8 and Sarah had a score of X = 70.
Z score for English: 


We can observe that Z score of Math is greater than Spanish and English.
Which means that Sarah did the best in her Math exam.
Hence, Sara expect the better grade for Math class.
Answer:
The slope of the line is -3
Step-by-step explanation:
I chose the points (-2,3) and (0,-3)
The slope formula: m=
==>
==>
= 
Our final answer is -3.
Hope that helps!
Answer:
the answer is A
Step-by-step explanation:
2xy^2 + 8y => 2y ( xy +4)