x = total amount of gumballs
let's start subtracting the balls she's giving away
and we also know that after all that has been subtracted, she's only left with 5, so we can say that
7+8= 15 so the second answer
3 +250= 253 take 253 dived it by 3 ,subtract 4 =80.3
Number of aircrafts = 2939.93 + 233.517 * (years since 1990).
The predicted number of aircrafts flying in 1992 (1922 does not make sense for this equation because it returns a negative number of aircrafts) is found by pluging in the years since 1990 to 1992 = 1992 -1990 = 2 =>
number of aircrats = 2939.93 + 233.517 * (2) = 3406.96.
That is the predicted number.
The actual number is on the graph. You just go to the explanatory value 2 (years since 1990) on the horizontal axis, move straight upward until you reach the corresponding point on the graph, and read its vertical coordinate (go horizontally to the left until the vertical axis)
The first method is simple division.
Answer is 786. Hope this helps.
