Solve the problem round to nearest hundreth

Find the number of positive three-digit even integers whose digits are among 9, 8, 7,5, 3, and 1.

Find the number of real number solutions for the equation. x2 + 5x + 7 = 0 0 cannot be determined 1 2

Afarm that has 4 x 10^2 acres has 1.2 x 10^5 cattle. what is the average number of cattle per acre? write the answer in scientific notation. answere asap