Question 96168
price of a coat=(2x+5) 
number of coats bought (5X-3)
THEREFORE WE MULTIPLY THESE 2 VALUES & WE GET THE TOTAL COST OF ALL THE COATS BOUGHT. THUS:
(2X+5)(5X-3)
10X^2+25X-6X-15
10X^2+19X-15 ANSWER FOR THE TOTAL COSTS.