Paul uses the expression 4.2 times 12.3 times 14.6 to determine the cost of tiling the floor of a room that measures 12.3 feet b
y 14.6 feet; each square foot of tile costs $4.20. How many decimal places will be in Paul’s final answer?
one
three
five
eight
one
three
five
eight
2 answers:
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Answer: (5, -2)
Step-by-step explanation:
Substitute x-7 for y in 2nd equation
Solve for y