The expression 2x + 4 would be a ?

The longer leg of a 30-60-90 trangle is 18

Grandpa ernie is shrinking! over the past 4 years his height decreased by a total of 2.4 cm.it decreased by the same amount each year. what was the change in grandpa ernie's height each year

The difference between the measures of two complementary angles is 14. find the measure of both angles.