Answer: 12x² + 11x - 15
fg = (4x - 3)(3x + 5) = 12x² + 20x - 9x - 15 = 12x² + 11x - 15
Step-by-step explanation:
Answer:
2839.16
Step-by-step explanation:
119.92(m)+81=C(t)
119.92(23)+81=C(t)
2839.16=C(t)
The student clearly made a mistake, because he found that he needs to mix more solution that he wants to end up with. Mixing 1.17 L of one solution with more of some other solution will make more than 1 L of another solution.
The mistake is writing <em>x</em> - 1 instead of 1 - <em>x</em>.