Answer:
A. 48
Step-by-step explanation:
It is. 7.17285714285714 you can stop at the thousands

<h2>Explanation:</h2>
In this exercise, we have the following equation:

We can write this Quadratic Equation in Standard Form as follows:

So this is a Non-perfect Square Trinomial. To factor out this, let's choose two numbers such that:
- The sum is -14
- The product is 24
Those numbers are:
- -12 and -2
- SUM: -12-2 = -14
- PRODUCT: (-12)(-2)=24
So we can write this as:

<h2>Learn more:</h2>
Quadratic Ffrmua: brainly.com/question/10188317
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Rate = (150 miles)/(3 hrs) = 50 mph
so . . .
(50 mph)*(time) = 400 miles
*divide both sides by 50 mph
time = (400 miles)/(50 mph) = 8 hrs
time = 8 hrs