Isabelle was asked to write an absolute value inequality to represent the numbers that are less than 1 unit away from 7 on a number line. Isabelle wrote |x − 1| < 7. Explain and correct Isabelle’s error.

Identify whether the figure has plane symmetry, symmetry about an axis, or neither.

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)

God's gym charges a sign-up fee of $100 plus $30 per month. write an expression to represent how much someone would pay for a membership.