PLEASE HELP! POINTS! Given z varies jointly as x and y, use the given values to find an equation that relates x, y, and z.

x = 12, y = 5, and z = 30

A.) z = 0.5xy
B.) z = 12.5xy
C.) z = 2/xy
D. z = 2xy

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

If there are 3.281 feet in 1 meter, how many inches are in one centimeter

The number of members f(x) in a local swimming club increased by 30% every year over a period of x years. the function below shows the relationship between f(x) and x: f(x) = 10(1.3)xwhich of the following graphs best represents the function? graph of f of x equals 1.3 multiplied by 10 to the power of x graph of exponential function going up from left to right in quadrant 1 through the point 0, 0 and continuing towards infinity graph of f of x equals 10 multiplied by 1.3 to the power of x graph of f of x equals 1.3 to the power of x