Which relation is a function? A. (-3,5) ( 5,3) (3,-5) (-3,-3) B. (0,5) (2,5) (1,-4) (2,3) C. (2,1) (3,4) (2,-1) (3,-4) D. (0,3) (-2,-6) (5,6) (2,3)

Zoe placed colored blocks on a scale in science class. each block weighed 0.8 ounces. the total weight of all the colored blocks was 12.8 ounces. how many blocks did zoe place on the scale? write and solve an equation to find the answer.

Will give brainliest what is the value of x? enter your answer in the box.

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.