Answer:
x1.20
y0.75)
Step-by-step explanation:
you have to simplify
<span>15% = 15/100 = 0.15
total bill = С + 0.15С
= 1.15C</span>
49.95*.1= 4.99
44.96*.065= 2.92
44.96+2.92= 47.88 (the cost for first option)
44.95+4= 48.95
The first option would be cheaper.
Hope this helped you!
Answer:
2 real roots
Step-by-step explanation:
The discriminant is b^2 -4ac where ax^2 +bx -c
If b^2 -4ac > 0 we have 2 real roots
b^2 -4ac = 0 we have 1 real root
b^2 -4ac < 0 we have 2 complex roots
x²-x-12=0
a =1 b=-1 c = -12
(-1)^2 - 4(1)*(-12)
1 +48
49 > 0
2 real roots
