2a-4/1= -a-1/a-4 Cross multiply (2a-4)(a-4)= -(a-1) 2a^2-8a-4a+16= -a+1 Bring right to left sign change signs 2a^2-8a-4a+16+a-1=0 Combine like terms 2a^2-11a+15=0
a= 2 b= -11 c= 15 Use quadratic formula
-b+-sq rt of b^2-4ac. Divided by 2a
-(-11) +- 11^2-4(2)(15) divided by 2(2) 11+-sq rt 121-120 divided by 4
It would cost $35 for 14 wings. you find the unit rate of one wing dividing by $50 by 20, & it’ll come out as 2.5 dollars for every wing. then you’d multiply 14 by 2.5.
