What’s the answer for this problem a. 11 b. 5 c. -5

5

Step-by-step explanation:

Given a matrix

Then the determinant = ad - bc

For the matrix

determinant = (2 × 4) - (3 × 1) = 8 - 3 = 5

(2,20) means that the 2 is 2 hours and 20 is 20$. so there both 20$ for 2 hours only the same price. like it says. so, the dunk tank and the bounce house are the same price (20$) for the same amount of time (2 hours).

hope i