Answer: The student needs 144 points to get a score of 96%
Step-by-step explanation:
Answer:
300 cars must be made to minimize the unit cost
Step-by-step explanation:
Vertex of a quadratic function:
Suppose we have a quadratic function in the following format:

It's vertex is the point 
In which


Where

If a>0, the vertex is a minimum point, that is, the minimum value happens at
, and it's value is
.
The cost of producing x cars is given by:

So a quadratic equation with 
How many cars must be made to minimize the unit cost?
This is the xvalue of the vertex. So

300 cars must be made to minimize the unit cost
Answer:
$15
Step-by-step explanation:
1. multiply the original price (20) by the discount rate (25% or 0.25)
20 * 0.25 = $5 off
2. subtract the discount ($5) from the original price ($20)
20-5 = 15
It’s b because when you multiply 2.5 by 2.5 you get 6.35 and do the same for 1.5