Explain this to me i don't understand it.

find the perimeter of the triangle formed in the coordinate plane by the following points:

x (0 ,2)
y (3,-2)
z (-7,-2)

what i have is d=v (3-0)^2 + (3-7)^2

Josephine has a great garden with and area of 2x2 + x - 6 square feet

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.

What are the solutions of the equation? 5z^2 + 9z - 2 = 0 a. 1, -2 b. 1, 2 c. 1/5, -2 d. 1/5, 2