Determine if it’s law of detachment, syllogism or invalid (1) If a triangle is equilateral, then it is equiangular.
(2) If a triangle is equiangular, then none of its angles are obtuse.
(3) If a triangle is equilateral, then none of its angles are obtuse.

answer is x<

see attached

step-by-step explanation:

given the function as;

write the equation replacing f(x) with y

form   and fill a table containing values of y with corresponding values of x

you can take a range for   values of x as -3≤x≤3

solving for x=-3

for x=-2

repeat the same procedure to get the values of y for the remaining ,x=-1 to x=3

plot the values of y against values   of x and obtain the following graph

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