Answer: Is D
Step-by-step explanation:
I hope I am right if I'm not please correct me
The square of a binomial expands as follows:

Expanding all the binomials, we have

Sum like terms:

Simplify terms appearing on both sides:

Move all terms involving k to the left and all numbers to the right:

Divide both sides by -20:

Answer:
x=9
Step-by-step explanation:
80+6x+16=17x-3
=>17x-3-6x-16=80
=>11x-19=80
=>11x=80+19
=>11x=99
=>x=99/11
therefore
x=9
Answer:
1.43
Step-by-step explanation:
12 tenths ⇒ 1.2
23 hundredths ⇒ 0.23
0.23 + 1.2 = 1.43
Answer:5250.00
Step-by-step explanation: percents are a multiplication so 35,000×15=5250.00