Use the clues to match each man (john, henry, jacob, rudy) with his last name (lopez, gold, brown, and bright). john has a last name that starts with b. henry's last name is bright. rudy's last name is not a precious metal.

John Brown, Henry Bright, Jacob Golf and Rudy Lopez

Step-by-step explanation: We know that Henry's last name is Bright so that's one, John's last name starts with B, the only name that starts with b is Brown, now it says that Rudy's last name isn't a precious metal, meaning that the only last name that could be the answer is Lopez, and that leaves us with Jacob who, obviously has Gold as his last name

t = 3

step-by-step explanation:

put t = 3 in this expression :

(3²-1)(3²-2)(3² - 3)(3² - 4) = 8×7×6×5 = 56×30 = 1680