4,3⅔,3⅓,3 common difference

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

choice b

step-by-step explanation:

f(x) = 88x^2 -264x + 300

the line of symmetry of a parabola is defined by

h = -b/2a

where ax^2 +bx+c=0

so

h = - -264/ (2*88)

h = 3/2

so x = 1.5