Identify whether each of these functions contains a minimum or a maximum
[Title] Minimum Maximum
f(x)=7x2−49
f(x)=2x2−5x+1
f(x)=−12x2+4x−5
f(x)=−3x2+4x−7

3382-299=3383- ? fill in the blank?

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.

How many 3-digit numbers can you write using only digits 1 and 7? (of course, digits can repeat.) how many 3-digit numbers can you write using only digits 1 and 7? (of course, digits can repeat.)