Please help me solve x and y

i believe your answer is 99.7% of 7-year-old children are between 46.6 inches and 49.5 inches tall.

but which class are u may know that first

0.0076, if you meant 4.125 divided by 0.03125 it would be 132

step-by-step explanation:

first you have to move the decimal in 0.03125 over until its behind the 5 which is 5 places over. now the number is 3125

then you have to move the decimal in 4.125, 5 places over. now the number is 4,112,500.

now you divide like you would normally would and get 0.0076