Solve the problem.One cook can make enough food for 350 people a night. How many cooks are needed to feed 1400 people a night?
A. 4 cooks
B. 3 cooks
C. 5 cooks
D. 2 cooks
Answer: A
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Add or subtract as indicated.Add.
A. 10ab3 + 4a2b2 - 2b5 B. 10ab3 + 4a2b2 + 4b5 C. 10ab3 + 4a2b2 D. 10ab3 + 4a2b2 - 4b5
Solve and check.
= 
A. x = 
B. x = 
C. x = 
D. x = 
The price of a certain commodity in dollars per unit at time t (measured in weeks) is given by
?
.
?
What is the price of the commodity at t = 0?
?
$__________ / unit
?
How fast is the price of the commodity decreasing at t = 0?
?
$__________ / wk
?
Find the equilibrium price of the commodity. (Hint: It's given by 
. Also, use the fact that 
.)
?
$__________ / unit
What will be an ideal response?
The healing law for skin wounds states that
?
?
where A is the number of square centimeters of unhealed skin after t days when the original area of the wound was A0 . Graph the healing curve for a wound of 50 cm 2 .
?
A. 
B. ?
C. ?
D. ?