Answer:
15/31
Step-by-step explanation:
substitute -9 were there's x in the function
f(-9)=2(-9)+3/4(-9)+5
=-18+3/-36+5
=-15/-31
the negatives cancel giving you
15/31
3x7 + 2x3 = 22 + 6 = 28 is the area
If you add up all of the money he made and divide it by the amount he made via tips, you will see that the percent tip he received was 16%
Answer:

Step-by-step explanation:

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a(1) = 3(1)-1 = 3-1 = 2
a(2) = 3(2)-1 = 6-1 = 5
a(3) = 3(3)-1 = 9-1 = 8
So, the sequence would be 2,5,8,11....