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kaheart [24]
4 years ago
9

The number 248,682 rounded off to the nearest hundreds becomes

Mathematics
2 answers:
krok68 [10]4 years ago
7 0
248,700 is the correct answer.
iVinArrow [24]4 years ago
4 0
<span>The number 248,682 rounded off to the nearest hundreds becomes 248,700. Rounding off to the nearest hundreds means rounding off until the hundreds place which is 6 from the numerical value given and since the number after is more than 5 we round off 6 to 7 resulting to 248,700.</span>
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In 1990, the cost of tuition at a large Midwestern university was $95 per credit hour. In 1999, tuition had risen to $221 per cr
notsponge [240]

Answer:

The cost of tuition as a function of x, the number of years since 1990, is C(x)= 14*(x-1990) + 95

Step-by-step explanation:

A linear function is a polynomial function of the first degree that has the following form:

y= m*x + b

where

  • m is the slope of the function
  • n is the ordinate (at the origin) of the function

So, in this case: C(x)= m*( x-1990) + b where x is the number of years since 1990.

Given the coordinates of two points, it is possible to determine the slope m of the line from them using the following formula:

m=\frac{y2 - y1}{x2 - x1}

In this case, you know that in 1990, the cost of tuition at a large Midwestern university was $95 per credit hour. And in 1999, tuition had risen to $221 per credit hour. So:

  • x1= 1990
  • y1= 95
  • x2= 1999
  • y2= 221

So the value of m is:

m=\frac{221 - 95}{1999 - 1990}

m=\frac{126}{9}

m= 14

So C(x)= 14*( x-1990) + b. In 1999, tuition had risen to $221 per credit hour. Replacing:

221= 14*(1999 - 1990) + b

221= 14*9 +b

221= 126 + b

221 - 126= b

95= b

Finally, <u><em>the cost of tuition as a function of x, the number of years since 1990, is C(x)= 14*(x-1990) + 95</em></u>

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