What is the answer of 10a2b + ab2 – 10ab + 3a2b + 4ab – 7ab2

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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.

Ahyperbola centered at the origin has a vertex at (-6,0) and a focus at (10,0)