Answer:
sum of twice a number and three is 21
2x + 3 = 21
x = 9
58+28=86.
8+8=16
5+2=7
take the 1 from 16 and add it onto the 7
1+7=8: thats the tens place.
Now we only have 6. So thats the ones place. Combine the two numbers and you get 86.
Answer:
-2/3x+9
Step-by-step explanation:
Answer: The correct answer is D
Step-by-step explanation: you have to factor the polynomial