If I'm right, then the answer would be B. 800. Hope I helped!
Answer:
Expression: 66(19+14)
Answer: 2178
Step-by-step explanation:
<u>66(19+14)</u>
66(33)
2178
Answer:
Any value greater than -9 and less than -3
Step-by-step explanation:
Explained and uploaded
Using the vertex of the quadratic function, it is found that:
a) The maximum number of customers in the store is at 12 P.M.
b) 75 customers are in the store at this time.
The number of customers in x hours after 7 AM is given by:

Which is a quadratic equation with coefficients 
Item a:
The maximum value, considering that a < 0, happens at:

Hence:

5 hours after 7 A.M, hence, the maximum number of customers in the store is at 12 P.M.
Item b:
The value is y(5), hence:

75 customers are in the store at this time.
A similar problem is given at brainly.com/question/24713268
He can make 15 chess boards.
All you need to do is multiply 3 by 5.