Which of the following statements are true regarding functions? Check all that apply.
O A. The horizontal line test may be used to determine whether a
function is one-to-one.
B. A function is a relation in which multiple values of the input
variable are paired with at least one of the output variable.
M C. The vertical line test may be used to determine whether a relation
is a function.
O D. A sequence is a function whose domain is the set of rational
numbers.

Answer: d. 39 cmin the diagram, the approximate length of the minor arc de is 39 centimetres.step-by-step explanation: the formula for the length of an arc in a circle is as displayed below.let the length of the minor arc de = xx = 2( pi )r × angle of sector / 360°from this, we will substitute the values given from the problem into the formula to obtain the length of the minor arc de.x = 2( pi )r × angle of sector / 360°r = radius = 25cmpi as an approximate value = 3.14angle of sector = 120°x = 2( 3.14 )( 25 ) × 120° / 360°x = 157 × 1 / 4x = 39.25x = 39 ( rounded to the nearest whole number as an approximate value )