The front row of an auditorium has 10 seats. There are 50 rows in total. If each row has 2 more seats than the row before it, which expression gives the total number of seats in the last row?

A) 10 + 2(50 - 1)
A 10+ 2(50)
C) 50(10 + 2)
D) 10 + 2^50

10+2(50-1)

Step-by-step explanation:

This is an arithmetic sequence

We know the first term a1 = 10

The common difference, d = 2

an = a1+d(n-1)

We want to find the number of terms when n = 50

a50 = 10+2(50-1)

the required function is .

step-by-step explanation:

from the given table it is noticed that the graph passing through (-3,7), (0,4), (3,1) and (8,-4).

it is a linear function because the value of y is decrease by one as the value of x increase by 1.

the slope of the function is

the slope of the function is -1 and the y-intercept is 4.

the slope intercept form is

where, m is slope and b is y-intercept.

therefore the required function is . the graph of this function is shown below.

25.3

step-by-step explanation:

1st step

add 3+6

=9

multipy 9*3

=37