What is x? (7x+1)=(9x-7)

Solve - pv + 40 < 65 for v solve 7w - 3r = 15 for r

Write the sentence as an equation. b increased by 281 is d

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.