The lowest common denominator of 1/4 and 5/6 is 12
(a) The gradient is , and represents the cost of buying one book in dollars.
(b) Draw the line through (0,0) and (20, 130).
(c) Since the gradient of the line representing company B is less (6.5 vs 8), it is better to buy books from company B because they are cheaper.
Answer:
4
Step-by-step explanation:
Simply, replace the values we are given for x=4 and y=(-2) into the expression.
5(x + y) – 3(x – y)
5*(4 - 2) - 3*(4 -2)
20 - 10 - 12 + 6 = 4