Step 1 Step 2
Step 3
Select all the expressions that represent the number of squares in Step n.
Of(n) = 8 + 3 (n - 1) for n 2 1
Of(n) = 3 + 8 (n - 1) for n 2 1
f(1) = 8, f (n) = 3 + f(n-1) for n 2 2
Of(1) = 8. f(n) = 8 + f(n-1) for n 2 2
(ndo 3 + 8n for n > 1
Of(n) = 3 + 5 for n 21

table a is wierd

step-by-step explanation:

6*f

step by step resolutions

1) n+n+1+n+2=51

3n+3=51

3n=48

n=16

the three numbers are 16, 17 and 18.

2) x+15=4x

3x=15

x=5

radha is now 5 years old

3) the two digits are x and y.

y=3x

(10x+y)+(10y+x)=88

y=3x

11x+11y=88

y=3x

x+y=8

x+3x=8

x=2

the original number can be either 28 or 82.

4) n+(n+2)+(n+4)=48

3n+6=48

3n=42

n=14

the numbers are 14, 16 and 18.

5) y=x+3

10y+x+10x+y=143

y=x+3

11x+11y=143

y=x+3

x+y=13

x+x+3=13

2x=10

x=5

the original number can be 57 or 75.

hope this !