You want to match your school's long jump record of 17 feet 8 1/4 inches. your best long jump so far is 15 feet 11 3/4 inches. how much farther do you need to jump to match the school record

1 foot and 8.5 inches

Step-by-step explanation:

record: 17ft 8.25 in

yours: 15ft  11.75in +.5 in = 16 ft .25 in

now that yours is 16 ft and .25 inches all you have to add is 1ft and 8 inches which adds up to be 1ft and 8.50 inch

answer:   x = 3 + √11     and     x = 3 - √11

step-by-step explanation:

x² - 6x + 9 = 11

(x - 3)² = 11

x - 3 = ±√11

    x = 3 ± √11

x = 3 + √11     and     x = 3 - √11