19. Graham's class raised \( \$ 200 \) in a coin drive for a school fundraiser. The total for the entire school campus was \( 4.8 \times 10^{3} \). How many times greater was the total amount raised by the school compared to Graham's class? Express your answer in scientific notation.

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

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 ?

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) \( \frac{4}{5}+\frac{2}{5}= \)

In a box of 80 glasses, 3 are broken. Work out the percentage of broken glasses in the sox.