Solve the problems.By switching service providers, a family's telephone bill decreased from about $50 a month to about $45. What was the percent of decrease?
A. 5%
B. 11%
C. 11.1%
D. 10%
Answer: D
Mathematics
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Use the table to estimate the rate of change of y at the specified value of x.x = 1.
A. 1 B. 1.5 C. 0.5 D. 2
Mathematics
Find the inverse of the matrix by using a graphing calculator.
A. 
B. 
C. 
D. 
Mathematics
Provide an appropriate response.Define f(0,0) in such a way that extends f(x, y) = 
to be continuous at the origin.
A. No definition makes f(x, y) continuous at the origin. B. f(0, 0) = 2 C. f(0, 0) = 1 D. f(0, 0) = 0
Mathematics
Refer to a triangle ABC.If A = 23.2° and B = 72.5°, find C.
A. 54.3° B. 174.3° C. 84.3° D. 264.3°
Mathematics