What fraction of the samples have a salt content greater than 38 grams?

What percent of 18 is 24? and plz explain thx.

In δabc, m∠acb = 90°, cd ⊥ ab and m∠acd = 45°. find: a find cd, if bc = 3 in

5. write an equation for the line that is parallel to the given line and that passes through the given point. y = –5x + 3; (–6, 3)