A26-mile section of a highway is designated as a scenic byway. new signs will be placed at the beginning and end of this section and at every 0.5 mile in between. how many new signs are needed

There are 53 new signs are needed.

Step-by-step explanation:

Since we have given that

Length of section of a highway = 23 miles

At every 0.5 miles in between, new signs will be placed at the beginning.

So, Number of new signs would be

And there is a new sign at the beginning too.

So, the number of new signs would be 52+1= 53.

Hence, there are 53 new signs are needed.

21

step-by-step explanation:

answer: - (a)

(b) 88 seats

step-by-step explanation:

given: in an auditorium, there are 22 seats in the first row and 28 seats in the second row.

thus first term=

second term=

the number of seats in a row continues to increase by 6 with each additional row.

⇒d= 6

a) given formula :

b)   let the number of seats (n) = 12

substitute n=12 in the explicit rule formed in (a)

∴there are 88 seats in 12 rows.