Anais, a math teacher, noticed that the average grade on an exam, g, given that n students watch the related
video can be given by the function g(n) =50 +1.5n. she also noticed that the number of students, s, who
watch an m minute video can be modeled by the function sim) = 30 - m.
find an explicit expression that gives the average grade on an exam if the related video is m minutes.

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 )

Ibelieve it’s 5 and then 3