Name the property illustrated by the statement.3 ? 9 = 9 ? 3
A. associative property of multiplication
B. identity element for multiplication
C. commutative property of multiplication
D. distributive property
Answer: C
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Let x represent the unknown, and write an equation for the sentence. Do not solve. If the quotient of a number and 8 is added to twice the number, the result is 5 more than the number.
A. 
+ 2x = 5x
B. 
+ 2 = x + 5
C. 8x + 2x = 5x
D. 
+ 2x = x + 5
Determine whether the lines through each pair of points are parallel, perpendicular, or neither.(-3, 4) and (-19, -2); (10, -10) and (7, -18)
A. parallel B. neither C. perpendicular
Find an equation of the following curve.A hyperbola centered at the origin having vertex at (0, -6) and eccentricity equal to 2
A. 
- 
= 1
B. 
+ 
= 1
C. 
- 
= 1
D. 
- 
= 1
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?