if x is an integer and 2.134 × 10 ^ x is less than 210,000 , what is the greatest possible value for x ?
"21340 * 10 ^ - 4 * 10 ^ x < 210,000 , x = 4 because the next zero on the right side will make 21,340 > 210,000 answer d ,"
floor(divide(log(divide(210,000, 2.134)), log(10)))