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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Simplify the fraction.
A. 
B. 
C. 8
D. 
Mathematics
Provide an appropriate response.The roots of (x - 1)(x + 2) = 10 are
A. -1 and 2 only B. -4 and 3 only C. -4 and 8 only D. 8 and 11 only E. 1 and -2 only
Mathematics
Solve the problem.Mike buys a bike for $2700. In the first month after he buys it, it depreciates by 8%. What is the value of the bike after 1 month?
A. $2692 B. $2484 C. $216 D. $2916
Mathematics
Factor.x2 - 3x - 54
A. (x - 6)(x + 1) B. Prime C. (x - 6)(x + 9) D. (x + 6)(x - 9)
Mathematics