Help me with my test

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

i think the answer is d im not sure

x = 2

step-by-step explanation:

if sr parallel to ba then the sides bc and ac are in proportion, that is

= ← substitute values

= ( cross- multiply )

27x = 6(4x + 1)

27x = 24x + 6 ( subtract 24x from both sides )

3x = 6 ( divide both sides by 3 )

x = 2