The electricity rates charged by Monroe Utilities in the summer months are as follows. - Base Charge is \( \$ 7.00 \) - First 700 kWh or less at \( \$ 0.06 / \mathrm{kWh} \) - Over 700 kWh at \( \$ 0.09 / \mathrm{kWh} \) The base is a fixed monthly charge, independent of the kWh (kilowatt-hours) used during the month. a. Find an expression for the cost function \( C(x) \) for usage of or under 700 kWh . \( C(x)=7+0.06 x \) \( \sigma^{8} \) b. Find the charge for using 900 kWh . \( \$ 7+0.06 \)

A car was valued at \( \$ 34,000 \) in the year 1990 . The value depreciated to \( \$ 11,000 \) by the year 2006 . A) What was the annual rate of change between 1990 and 2006 ?

Valuate \( \sum_{k=1}^{8}(-1)^{k+1} 3 k \)

Gleviote \( 1 \frac{3}{4}+\frac{3}{6} \) by finding a common denominator. vive your ariswer as a mixed number in its simplest form. \( 1 \frac{3}{4}+\frac{3}{6}=\square \)

A car was valued at \( \$ 45,000 \) in the year 1993 . The value depreciated \( \$ 12,000 \) by the year 2003 . A) What was the annual rate of change between 1993 and 2003 ?

Calculate \( 1 \frac{3}{4}+\frac{3}{6} \) by finding a common denominator. Give your answer as a mixed number in its simplest form. \[ 1 \frac{3}{4}+\frac{3}{6}=\square \]