a train is moving at an average speed of (5x-8) miles per hour (A) write an expression for the distance traveled by train in 3 hours(B)how far does the train travel in 3 hours if x=15

a.3(5x-8)

b.201miles

Step-by-step explanation:

A.because per hour (5x-8)miles so 3hours travel distance 3(5x-8)

B.3(5x-8

=3x (5x15-8)    15x5=75

=3x(75-8)         75-8=67

=3x67                67x3=201

=201miles

Hope this helps!

14.3

step-by-step explanation:

add all the numbers together.

9 + 12 + 15 + 16 + 17 + 17 = 86

now, divide 86 by how many numbers we have: 6.

86 / 6 = 14.3

it's 100

step-by-step explanation:

22, 28, 34, 40, 46

b)   f(n) = 6n + 16

  n = what is the number of the row ( 22 would be row 1) so if we replaced n with 1, we would get 22

c)   the  14th  row will have 100 seats

(1)   (2)   (3)   (4)   (5)   (6)   (7)   (8)   (9)   (10) (11) (12) (13) (14)

22 | 28 | 34 | 40 | 46 | 52 | 58 | 64 | 70 | 76 | 82 | 88 | 94 | 100

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