Evaluate the expression without using a calculator.
a. 
b. 
c. 
d. -4
e. 4
e. 4
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Add. Write the answer in lowest terms.
A. 26
B. 24
C. 25
D. 17
For the pair of supply and demand equations, where x represents the quantity demanded in thousands of units and p the unit price in dollars, find the equilibrium quantity and the equilibrium price.
?
and 
?
A. xb = 3,000 units pb = $45
B. xb = 2,000 units pb = $41
C. xb = 3,000 units pb = $44
D. xb = 2,500 units pb = $41
E. xb = 2,000 units pb = $45
Translate the sentence into a mathematical equation. Be sure to identify the meaning of all symbols.Momentum is the product of the mass of an object and its velocity.
A. If M represents momentum, m mass, and v velocity, then M = m + v.
B. If M represents momentum, m mass, and v velocity, then M = 
.
C. If M represents momentum, m mass, and v velocity, then M = 
mv.
D. If M represents momentum, m mass, and v velocity, then M = mv.
Add or subtract.3i + (-7 - i)
A. 7 - 2i B. -7 + 2i C. 7 - 4i D. -7 + 4i