Exercise 24 Page 511

Inequalities can be solved in the same way as equations, by performing inverse operations on both sides until the variable is isolated. The only difference is that when we divide or multiply by a negative number, we must reverse the inequality sign.

12 p ≥ -72

DivIneq

.LHS /12.≥.RHS /12.

p ≥ -72/12

MoveNegNumToFrac

Put minus sign in front of fraction

p ≥ - 72/12

CalcQuot

Calculate quotient

p ≥ -6

The above tells us that all values of p that are greater than or equal to -6 will satisfy the inequality.