How do you round 2.8497 * 10^3 and 349.69 to 3 significant figures?

When I have inserted [what I thought was the correct answers] ie; 350.0 and 2.85, I was told it was incorrect.

What's the answer of (-3 2/3) : 1/3

If i wash my hair 4 times a week how much do i wash it in a month?

Find the range of the function f (x) = 4x - 1 for the domain {-1, 0, 1, 2, 3}. {-5, - 3, 0, 7, 11} {-5, - 4, - 3, - 2, - 1} {-11, - 7, - 3, 1, 5} {-5, - 1, 3, 7, 11}

Tim is reading a book. On monday he reads 3 pages. On each day after that, he reads 3 times the number of pages that he read on the previous day. How many pages does he read on Thursday?

A cone has a volume of 36 in and height of 9 in. What's the area of the base?

Simplify the following expression: - 2 x 2 - 1 + 1 x + 1 - 1 x - 1

300 30 3 0.3 follows what pattern

Label the percent bar below with the appropriate estimations.

Lillian says that 25% of a number will always be less than 75% of any other number.

Each year, 20% of all untenured State University faculty become tenured, 5% quit, and 75% remain untenured. Each year, 90% of all tenured S. U. faculty remain tenured and 10% quit. Let U_t be the number of untenured S. U.