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 expression. Write your answer with only positive exponents. Assume that all variables represent nonzero real numbers.
2
A. 
B. 
C. 
D. - 
Mathematics
Solve the problem.Find the total of 662 and 64.
A. 716 B. 726 C. 725 D. 736
Mathematics
Write one or more inequalities that describe the set of points.The seventh octant of the xyz coordinate system
A. x ? 0, y ? 0, z ? 0 B. x ? 0, y ? 0, z ? 0 C. x ? 0, y ? 0, z ? 0 D. x ? 0, y ? 0, z ? 0
Mathematics
Solve for real roots.x2/3 - 5x1/3 + 6 = 0
A. x = 2, 3 B. x = -3, -2 C. x = 8, 27 D. x = -27, -8
Mathematics