One year ago Claire was 4 feet 6 inches tall. Now Claire is 4 feet 10 inches tall. By what percentage did Claire's height increase?

7.4 percent

Step-by-step explanation:

Convert both measurements to inches.

4 feet 6 inches = 54 inches

4 feet 10 inches = 58 inches

Formula for Percent of Increase:

%

o

f

I

n

c

r

e

a

s

e

=

Difference

Original

⋅

100

58 - 54

54

⋅

100

4

54

⋅

100

7.407407

...

%

or about

7.4

%

positive

step-by-step explanation:

the quadrant is facing upwards

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.