Simplify this expression.
8.9 – 1.4x + (–6.5x) + 3.4

23 points!

At the newest animated movie, for every 9 children, there are 4 adults. there are a total of 39 children and adults at the movie.

Suppose your school costs for this term were $4900 and financial aid covered 3/4 of that amount. how much did financial aid cover? and how much do you still have to pay?

At the county fair, the baxter family bought 6 hot dogs and 4 juice drinks for $12.90. the farley family bought 3 hot dogs and 4 juice drinks for $8.55. find the price of a hot dog and the price of a juice drink.