The amount of radioactive substance left at the end of x days can be represented by an exponential function. the initial amount is 100 grams, and the amount left after three days is 72.9 grams. which function models the amount of radioactive substance left at the end of x number of days? a. f(x)=0.85^x b. f(x)=0.90^x c. f(x)=100(0.85)^x d. f(x)=100(0.90)^x steps with the i was never taught

Two language majors, anna and megan, took exams in two languages. anna scored 85 on both exams. megan scored 74 on the first exam and 85 on the second exam. overall, student scores on the first exam had a mean of 82 and a standard deviation of 4, and the second exam scores had a mean of 71 and a standard deviation of 13. a) to qualify for language honors, a major must maintain at least an 85 average across all language courses taken. so far, which of anna and megan qualify? b) which student's overall performance was better?

Find the area of just the wood portion of the frame. this is called a composite figure. you will need to use your values from problem #2need all exepct 4 answerd if you can

5. write an equation for the line that is parallel to the given line and that passes through the given point. y = –5x + 3; (–6, 3)