Ralph bought 3 boxes with 20 pencils each and 4 boxes with 10 pens each. to find the total number of pencils and pens, ralph evaluated 3×20+4x10=720. is his answer reasonable? explain.

Asap describe the transformations required to obtain the graph of the function f(x) from the graph of the function g(x). f(x)=-5.8sin x. g(x)=sin x. a: vertical stretch by a factor of 5.8, reflection across y-axis. b: vertical stretch by a factor of 5.8,reflection across x-axis. c: horizontal stretch by a factor of 5.8, reflection across x-axis. d: horizontal stretch by a factor of 5.8 reflection across y-axis.

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

Roger could feed 5 walruses with 4 kilograms of fish. how many walruses could he feed with 7.2 kilograms of fish?