· y = x + 5; x = 3. find the value of y for the given value of X

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?

Check all that apply. f is a function. f is a one-to-one function. c is a function. c is a one-to-one function.

Bob the builder is making 480kg of cement mix. this is made by cement, sand and gravel in the ratio 1: 3: 4