3(x-7)+8=-20
can someone explain how to do this step by step

If (x-2) 2= 49, then x could be a. -9 b. -7 c.- 2 d. 5 e.9

Jordan got 27 out of 90 correct on his test . what fraction of the marks did her get correct

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.