Will mark brainlest! plz answer fast i need this due in 2 minutes plz plz plz hurry which is true? a) an equation never has parentheses. b) an expression never has parentheses. c) an expression does not have an equal sign. d) sometimes an equation does not have an equal sign.

The head librarian at the library of congress has asked her assistant for an interval estimate of the mean number of books checked out each day. the assistant provides the following interval estimate: from 740 to 920 books per day. what is an efficient, unbiased point estimate of the number of books checked out each day at the library of congress?

Write a function for a rotation 90 degrees counter clockwise about the origin, point 0

Question 13 (1 point) jerome is starting a new job. his contract states he will earn $42,000 the first year, and will get a 4% raise per year. which function s(x) represents jerome's salary after a certain number of years, x?