Predict how many students in the school have at least one grandparent who belongs to a social network

Kapil needed to buy a long wooden beam. he went to two sawmills that each charge an initial fee plus an additional fee for each meter of wood. the following equation gives the price (in dollars) of a wooden beam from the first sawmill as a function of its length (in meters). p = 5+20xp=5+20x

Which representation has a constant of variation of -2.5

If chord ab is congruent to chord cd, then what must be true about ef and eg?