Mailing the first ounce of a letter costs $0.39, and it costs $0.24 to mail each additional ounce. How much does it cost to mail a 5-ounce letter?
(A) $1.85
(B) $1.16
(C) $1.45
(D) $1.35
Ans: (D) $1.35
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Use the graph to determine how close x must be to x0 in order that f(x) is within ? of L. Your answer should be of the form "If x is within ___ of ___, then f(x) is within ____ of ___ ."
A. If x is within 1 of 2, then f(x) is within 0.24 of 6 B. If x is within 0.25 of 2, then f(x) is within 1 of 6 C. If x is within 0.24 of 2, then f(x) is within 1 of 6 D. If x is within 0.24 of 6, then f(x) is within 1 of 2
Replace the polar equation with an equivalent Cartesian equation.r cos ? = 5
A. y = 5 B. x = 5 C. 5y = 1 D. 5x = 1
Determine what m and b represent.The value, in dollars, of a particular computer is given by 
where x is the number of years the computer has been in existence.
A. 7271 signifies the amount of depreciation per year, and -428.17 signifies the initial cost. B. -428.17 signifies the amount of depreciation per year, and 7271 signifies the initial cost. C. -428.17 signifies the hourly cost of repairs, and 7271 signifies the cost of software. D. -428.17 signifies the number of computers owned, and 7271 signifies the cost of electricity.
Solve the problem.Use the graph of y = 
- 2 to solve the equation 
A. -2 B. 0 C. 2 D. 6