First of all, you need to know these two equations:
a^b = c, which also translates into: log a c = b
Now, let us apply these equations here:
a here will stand for 2, b will stand for x, and c will stand for y.
So:
2^x = c, which translates into log2y = x
This means that the equation which is equivalent to y=2x is B. x = log2y
Answer:
$38.50
Step-by-step explanation:
We are told the cost of the fabric per meter, so we first need to convert 250 cm into meters.
1 meter = 100 cm
Therefore, 250 cm = 250 ÷ 100 = 2.5 meters
cost of fabric = $15.40 per meter
To calculate the total cost, mulitply the length in meters by 15.40:
2.5 x 15.40 = 38.50
Answer:
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Step-by-step explanation:
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