Answer: C) 98 inches
=====================================================
There are two ways to find the answer
-----------------------
Method 1
Multiply the length and width by the scale factor
10*3.5 = 35
4*3.5 = 14
The new larger rectangle is 35 inches by 14 inches
Add up the four sides: 35+14+35+14 = 98
The perimeter of the larger rectangle is 98 inches
-----------------------
Method 2
We can use the formula P = 2(L+W) to get the perimeter of the original rectangle
P = 2(10+4)
P = 2*14
P = 28
The original rectangle has perimeter 28 inches.
Or you could note how 10+4+10+4 = 28
Multiply this with the scale factor to get 28*3.5 = 98 inches