Answer:
Step-by-step explanation:
8 * 2.15 + (0.15 * 520.0) = Tom's Pay
8 * 2.50 + (0.12 * 520) = Martin's Pay
In a quadratic equation of the form (ax^2 + bx + c), the discriminant is equal to (b^2 - 4ac).
So for the first question it would be
4^2 - 4*(6*-2) = 64
Second question (-7)^2 - 4*(9*5) = -131
You can do the rest.
Answer: 79.2
Explanation: 110% as a decimal is 1.10
1.10 x 72=79.2