The answer is D because , 4x176 = 704 which you divide by 60 because thats how many minutes are in an hour which should come out to 11 hours
I feel it should be 30 because x represents the number of lessons, and 30 is multiplied by that.
(4ab - 9a - 8) - (7ab - 1)
distribute (multiply) the negative through the parenthesis
<span>(4ab - 9a - 8) - 7ab + 1
No need for other parenthesis because nothing in front or to combine inside. </span>
<span>4ab - 9a - 8 - 7ab + 1
</span>
Combine like terms
- 3ab - 9a - 7
Simplified answer would be 60k^2+k
and you get that answer by combining like terms, Good Luck!
Answer:
Step-by-step explanation: