18998 rounded to the nearest ten thousand

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

Given the sequence 7, 14, 28, 56, which expression shown would give the tenth term? a. 7^10 b. 7·2^10 c. 7·2^9

Which word in the sentence below is an interrogative pronoun? who is picking us up from school? whousisfrom