Find the least common denominator for the expression.
- 
A. 3a(a + 2)
B. 3a2 + 6
C. 3a + 2
D. 3a2 + 2
Answer: A
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Solve the problem.The Van der Waals equation provides an approximate model for the behavior of real gases. The equation is P(V, T) = 
- 
, where P is pressure, V is volume, T is Kelvin temperature, and a,b , and R are constants. Find the partial derivative of the function with respect to each variable.
A. PV = 
- 
; PT = 
B. PV = 
- 
; PT = 
C. PV = 
; PT = 
- 
D. PV = - 
+ 
; PT = 
Solve problems using a calculator.The number of therms has been established on a customer's gas bill, and the monthly bill is calculated as follows: Item ChargeCustomer charge $0.16326 per dayRegulatory fee $0.05267 per dayGas usage $0.89251 per therm for the first 48 therms $1.07352 per therm for each therm over 48 thermsSuppose that during a 31-day month a customer used 111 therms. What would the customer's total bill be? (Round to the nearest cent, if necessary.)
A. $118.05 B. $117.17 C. $118.94 D. $117.39
Provide an appropriate response.Which of the following statements is true regarding the unpaid or previous month's balance method:
A. new purchases or payments during the month do not affect the finance charge B. cash purchases are not allowed under this method C. interest rates charged are always higher than the average daily balance method D. new purchases or payments during the month affect the finance charge
Graph the equation by plotting points.y = |x| + 1
A. 
B. 
C. 
D. 