It’s solved by using the cosine rule
Give me branliest then pm me k :)
Which questions? im confused
ANSWER: 2y^2 + 13y +51 r(219/y-4)
picture explanation too:
The answer is 3
Multiply 6 by 3 to get the total amount of money for the books then minus the answer 18 which you get from 6 x 3 = 18
Then minus 18 from 21 to get $3
21 - 18 = 3
