Solve the problem.A gas company has the following rate schedule for natural gas usage in single-family residences:Monthly service charge$8.80Per therm service charge1st 25 therms$0.6686/thermOver 25 therms$0.85870/thermWhat is the charge for using 25 therms in one month?What is the charge for using 45 therms in one month?Construct a function that gives the monthly charge C for x therms of gas.
What will be an ideal response?
$25.52
$42.69
C(x) = 
Mathematics
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Match the vector equation with the correct graph.
r(t) = (1 - t2)j + 3tk; -1 ? t ? 1
A. Figure 4 B. Figure 7 C. Figure 2 D. Figure 8
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Solve the problem.Find an upper bound for the error in estimating 
using the Trapezoidal Rule with n = 6 steps.
A. 
B. 
C. 
D. 
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Perform the operation indicated. Simplify.
+ 
- 
A. 
B. 
C. 
D. 
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Write the equation as an equivalent exponential equation.ln(x) = -8
A. ln(-8) = x B. ex = -8 C. e-8 = x D. e8 = x
Mathematics