The sum of mr. hackett and his wife's age is 97. mr. hackett's age is 40 more than half his wife's age. how old are they?

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

Find the value of x for which the lines are parallel.

Koji is installing a rectangular window in an office building. the window is 823 feet wide and 534 feet high. the formula for the area of a rectangle is a=bh. what is the area of the window? enter your answer as a mixed number in simplest form in the box. $$ ft2