Which number line shows all the values of x that make the inequality -3.2 +1 < 7 true?

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

Credit card a offers an introductory apr of 3.4% for the first three months and standard apr of 15.7% thereafter,

Julie goes to the sports store and spends $40.50 before tax. she buys a pair of shorts for $21.75 and 3 pairs of socks that each cost the same amount. how much does each pair of socks cost? $$