SOLUTION: WHEN x NUMBER OF UNITS ARE SOLD, THE PRICE OF EACH UNIT (IN DOLLARS) IS GIVEN BY p = -x/2 + 75. FIND THE UNIT PRICE WHEN THE FOLLOWING QUANITIES ARE SOLD: 2, 7, 9, 11.

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Question 108361: WHEN x NUMBER OF UNITS ARE SOLD, THE PRICE OF EACH UNIT (IN DOLLARS) IS GIVEN BY
p = -x/2 + 75. FIND THE UNIT PRICE WHEN THE FOLLOWING QUANITIES ARE SOLD:
2, 7, 9, 11.
THANKS
JMS
Answer by MathLover1(20855) About Me  (Show Source):
You can put this solution on YOUR website!

given:
x+=NUMBER-+OF-+UNITS-+ARE-+SOLD
THE+-PRICE+-OF-+EACH-+UNIT+=+p+and is given by:
p+=+-%28x%2F2%29+%2B+75

FIND THE UNIT PRICE WHEN THE FOLLOWING QUANITIES ARE SOLD: 2, 7, 9, 11
if we take x+=+2, then
p+=+-%28x%2F2%29+%2B+75
p+=+-%282%2F2%29+%2B+75
p+=+-1+%2B+75
p+=+74

if we take x+=+7, then

p+=+-%287%2F2%29+%2B+75

p+=+-3.5+%2B+75

p+=+71.5

if we take x+=+9, then
p+=+-%289%2F2%29+%2B+75
p+=+-4.5+%2B+75
p+=+70.5

if we take x+=+11, then
p+=+-%2811%2F2%29+%2B+75
p+=+-5.5+%2B+75
p+=+69.5