Answer: 8
Step-by-step explanation: four plus four equals eight
The answer is 64, because the amount is doubled each day.
4x = 76
Where x is how many awnsers he got correct and 4 how many points each correct question awnsered.
Now you just have to isolate x by dividing both sides of the equation by 4
4x/4 = 76/4
x = 19
So he got 19 questions right and 10 awnsers wrong. In total there were 29 questions on his test
is the answer for this question -4 + 8x
