What is the sum of the first eight terms of the geometric series? –4 + 20 - 100 + 500 +...

HELP PLSS​

33% of college students say they use credit cards because of the rewards program. you randomly select 10 college students and ask each to name the reason he or she uses credit cards. find the probability that the number of college students who say they use credit cards because of the rewards program is (a) exactly two, (b) more than two, and (c) between two and five inclusive. if convenient, use technology to find the probabilities.

Simplify. 3(4+4x) (type your answer in with no spaces)

Write the percent as a fraction or mixed number in simplest form. 0.8%