Answer:
The expression given by Ivy is WRONG.
The correct expression is $(19 + 77 x (0.5) )
The total mount in jar = $57.5
Step-by-step explanation:
Here, for each point scored, $0.5 is put in the jar.
Now, the point scored in the first game = 38 points
So, the amount put in the jar for 38 points = 38 x ( amount for 1 point)
= 38 x ( $0.5) = $19
So, after first game, jar has $19.
Now, the point scored in the(2 +3) game = 77 points
So, the amount put in the jar for 77 points = 77 x ( amount for 1 point)
= 77 x ( $0.5) = 77 x (0.5)
So, after second and third game, jar has $ (77 x (0.5)).
Now, total amount in jar
= Amount after first game + Amount after second and third game
= 19 + 77 x (0.5)
But , here THE TOTAL AMOUNT given by Ivy = 38+(77 x 0.5)
And 19 + 77 x (0.5) ≠ 38+(77 x 0.5)
Hence, the expression given by Ivy is WRONG.
The correct expression is $(19 + 77 x (0.5) )
And, the total mount in jar = 19 + 38.5 = $57.5
