Answer:
2 x 20 + 2 x 15 = 40 + 30 = 70
Step-by-step explanation:
2x20=40
2x15=30
40+30=7
Answer:
25
Step-by-step explanation:
If you add 25 to both sides, you get
x^2-10x+25=26.
Now, you can simplify the left side into a perfect square
(x-5)^2=26
Salary = $ 30,000
10% of salary =

= $ 3,000
Hence, 10% increase in the salary
= 30,000 + 3,000 = $ 33,000
Thus, the answer is $ 33,000.