Solve the problem. Where appropriate, round to the nearest tenth of a percent.By switching service providers, a family's telephone bill decreased from about 
a month to about 
What was the percent decrease?
A. 11.1%
B. 5%
C. 10%
D. 11%
Answer: C
Mathematics
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Complete.0.226 mg = 
mcg
A. 22.6 B. 0.00226 C. 226 D. 0.000226
Mathematics
Solve the problem.A technician has readings that take 2
minutes each to read and record. How many readings can be completed in 192 minutes?
A. 11 readings B. 72 readings C. 512 readings D. 130 readings
Mathematics
Graph.3x + 4y = -20
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.Parts for an automobile repair cost $792. The mechanic charges $33 per hour. If you receive an estimate for at least $957 and at most $1023 for fixing the car, what is the time interval, in hours, that the mechanic will be working on the job?
A. [5, 7] B. [1, 5] C. [29, 31] D. [1, 7]
Mathematics