Five billion three hundred sixty four million eight hundred seventy nine thousand nine hundred sixty seven
Answer:
The equation is 8x+7=112
Step-by-step explanation:
the answer is 13.125
this is what i got. i am sorry if it is wrong.
The answer is 144 over 13
Let the score on her seventh test be "x".
SO,

∴ He must get 104% on his seventh test to get an average score of 90%
The sequence is arithmetic because the term is being multiplied by 5 each time