Can any one explain this question worth points! plz explain if you can

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

|p| > 3 {-3, 3} {p|-3 < p < 3} {p|p < -3 or p > 3}

Identify the percent of change as an increase or a decrease. 75 people to 25 people response - correct increase decrease question 2 find the percent of change. round to the nearest tenth of a percent.