36 ml STEXAS Test Prep
Lesson Check
Fill in the bubble completely to show your answer.
Use the Grade of Marching Band Members frequency
table for 8-9.
8. There are half as many 11th grade students
in the band as there are 9th grade students.
How many 11th grade students are in the
band?
A 42
C 51
Grade of Marching
Band Members
Grade
Frequency
9
84
10
51
11
(В
84
D
17
12
34
9. How many more 9th grade students are in
the hond than lotharade students?

hello from mrbilldoesmath!

answer:

a(n) - a(n-1) -3

discussion:

this ones a bit interesting. given a(n) = 5 - 3n consider this:

a(n-1) = 5 - 3(n-1)

          = (5 - 3n) + 3             => but a(n) = 5 - 3n, the first term

          = a(n)   + 3                 => subtract 3 from both sides

a(n-1) -3 = a(n)  

or

a(n) - a(n-1) -3

you,

mrb

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step-by-step explanation:

π^°×{{€€

5

step-by-step explanation:

-7/8

step-by-step explanation:

instead of subtracting you add the -6/8 and -1/8