Answer:
Step-by-step explanation:
one
Answer:

Step-by-step explanation:

(simplify)

(Add 3 to both sides)
(simplify)

(Multiply both sides by p)

(Multiply both sides by 2)

(Divide both sides by 7)
1. A. 10,000
Explanation: 10^4 = 10,000
2. x = -12
Explanation: see photo
5x + y = -13.....multiply by -3
4x + 3y = -17
-----------------
-15x - 3y = 39 (result of multiplying by -3)
4x + 3y = -17
-----------------add
-11x = 22
x = -22/11
x = -2
5x + y = -13
5(-2) + y = -13
-10 + y = -13
y = -13 + 10
y = -3
solution (-2,-3)