Identify the coordinates of (3, –9) after a rotation of 180° about the origin.

Kevin is an insurance salesman. when he sells a policy, he makes 20 percent of the policy premium (p) up front; then each year the policy is active, he receives 15 percent of the original premium. which equation could be used to figure his total commission on a policy that has been active for five years? c=0.80p c=0.20p + 0.15p c=0.35p + 4(0.15) c=0.95p

Planning for the possibility that your home might get struck by lighting and catch on fire is part of a plan for ?

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?