1. Through k construct a perpendicular to l. Call it m. Construct a parallel to i through k call it n. What relationship exists between m and n.

2. Through C construct a parallel to AB. Through A construct a parallel to BC. Through B construct a parallel to AC. Extend these lines to form a new triangle. What relationship exists between the two triangles?

Part A : The coefficients in the expression are "8" and "15. The variables in the expression are "h" and "t". 

Part B: There are actually two terms in the expression and they are "8h" and "15t". Terms are separated by a plus sign or a minus sign.

Part C: "15t" is the term  in the expression that shows the total earned for tablets sold.