Given the arithmetic sequence a1,a2,a3,a4a1,a2,a3,a4
39, 45, 51, 57

what is the value of a42

What is the value of f(x) = 2.2 for f(-2)?

Simplify the following expression (5x^+3x++5x-1)

Vera claimed the solution set on the number line represents the inequality  .  which error did vera make? vera wrote the inequality with the variable on the left side of the relation symbol. vera wrote a relation symbol that does not represent the direction of the ray. vera selected an inequality that does not include  –79 in its solution set. vera used the wrong number in her inequality.