Which expression is equivalent to 10a - 25 + 5b
choose 3 answers.

A. (2a−5+b)5
B. −2(−5a−25+5b)
C. 10×(a−2.5+0.5b)
D. (−2a+5−b)⋅(−5)
E. −10⋅(−a−2.5−0.5b)

The contents of 3838 cans of coke have a mean of x¯¯¯=12.15x¯=12.15. assume the contents of cans of coke have a normal distribution with standard deviation of σ=0.12.σ=0.12. find the value of the test statistic zz for the claim that the population mean is μ=12.μ=12.

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

Bob is putting books on a shelf and takes a break after filling 18 1/2 inches on the book shelf. the book shelf is now 2/3 full. how long is the entire bookshelf?