**Answer:**

(5+7)^5

12^5

12*12*12*12*12

248832

**Step-by-step explanation:**

Time spent on Internet + video games = 10 + 13 = 23 hours.

Total free time in a week = 5 * 7 = 35 hours

Percentage = 23/35 * 100 = 65.71%

**In short, Your Answer would be 65.71%**

Hope this helps!

A = L * W

A = 45

L = 2W + 1

45 = W(2W + 1)

45 = 2W^2 + W

2W^2 + W - 45 = 0

(2W - 9)(W + 5) = 0

W + 5 = 0

W = -5...not this one because it is negative

2W - 9 = 0

2W = 9

W = 9/2

W = 4.5 <=== the width is 4.5 ft

L = 2W + 1

L = 2(4.5) + 1

L = 9 + 1

L = 10 <=== the length is 10 ft

**Answer:**

n=-10/3

**Step-by-step explanation:**

"Twice the difference of a number n and seven is equal to four less than the product of five and the number n" translates into 2(n-7) = 5n - 4. To solve, isolate the variable n.

2(n-7) = 5n - 4

2n - 14 = 5n - 4

2n - 10 = 5n

-10 = 3n

-10/3 = n

**Answer:**

-28

**Step-by-step explanation:**