Triangle DEF, with vertices D(4,-9), E(8,-7), and F(5,-2), is drawn on the coordinate
grid below.
What is the area, in square units, of triangle DEF?

12. the amount of money in a bank account decreased by 21.5% over the last year. if the amount of money at the beginning of the year is represented by ‘n', write 3 equivalent expressions to represent the amount of money in the bank account after the decrease?

Finding tbe values of the variables in each kite

Atest consists of 10 multiple choice questions, each with 5 possible answers, one of which is correct. to pass the test a student must get 60% or better on the test. if a student randomly guesses, what is the probability that the student will pass the test?