一道SAT数学题,要说出题目的意思和答案详解
the first of a sequence of numbers is 1.If each term after the first product of -2 and the preceding term,what is the sixth term of the sequence
第一题答案是-32 是对的，这里还有一题数学题 A salesperson,s commission is K percent of the selling price of a car.Which of the selling price of a car.Which of the following represents the commission,in dollars,on 2 cars that sold for 14000 each 答案是280K