Write a whole number that rounds to 10,000 if we are rounding to the nearest ten thousand

Barbara deposited $300 in the bank. if the bank pays her simple interest at the rate of 4 percent per year, how much money will she have in her account at the end of 9 months?

What is the effect on the graph of the function f(x)=x when f(x) is replaced with -f(x)+4

Which of the functions graphed below has a removable discontinuity?