Each week, alfonso earns $85 for every shift he works at the theater and $15 for every dog-walking job. he uses the expression 85x + 15y to keep track of his earnings.
identify the coefficients and variables in the expression.

Triangle abc is translated 2 units right and 5 units down to form triangle a′b′c′. this triangle is then translated 5 units right and 4 units up to form triangle a″b″c″. if vertex a is at (-4, 2), what are the coordinates of vertex a″?