Answer:
m = -1, c = 2
Step-by-step explanation:
if A ( 3, 5) and B (1, 4) lie on the graph of the line mx + cy = 7, then their coordinates satisfy the equation of the line:
A:
B:
From the second equation:
Substitute it into the first equation:
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2 answers:
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Answer:
Step-by-step explanation:
Original cost = $32
Discount = 30% of 32
Selling price = 32 - 9.60 = $22.40
Tax = 6.75% of 22.40
= $ 1.51
Total cost with discount and tax = 22.40 - 1.51 = $ 20.89