Solve the equation. First simplify the expression by combining like terms.2(2z - 5) = 3(z + 2)
A. -4
B. -2
C. 16
D. 4
Answer: C
Mathematics
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Find a 95% confidence interval for the true population proportion.In a poll of 1096 college students, 15% said that they had cheated at least once on an exam.
A. 13.5% to 16.5% B. 14.9% to 15.1% C. 9.0% to 21.0% D. 12.0% to 18.0%
Mathematics
Find the quotient. Write the answer in standard form.
A. 
+ 
i
B. 
+ 
i
C. 
+ 
i
D. 
- 
i
Mathematics
Solve the problem.Suppose a cost-benefit model is given by y = 
, where y is the cost in thousands of dollars for removing x percent of a given pollutant. Find the cost of removing 65%.
A. $3600 B. $6685 C. $2340 D. $1856
Mathematics
The function f is one-to-one. Find its inverse.f(x) = 
A. f-1(x) = 
B. f-1(x) = 
C. f-1(x) = 
D. f-1(x) = 
Mathematics