Courtney is twice as old as Andre and three years older than Natalie. Courtney is half Shari’s age. The difference between Shari’s age and Natalie’s age is the same as the sum of Courtney’s age and Andre’s age. The equation below represents their ages. 2 x minus (x minus 3) = x + StartFraction x Over 2 EndFraction

In the equation, the variable x represents
age.

Extensive and unusual cold snaps have occurred here recently. is this evidence that global warming is lessening or not occurring? no—although the long-term trend is for warming, short-term weather patterns can still be variable. no—melting of glaciers and ice caps is making the oceans cooler, which can cause cold snaps. yes-- if global warming really were occurring, cold snaps wouldn’t happen. yes—due to global warming, weather patterns should be become less—not more—variable.