If y and x are directly proportional and when y = 10 then y = 70, Evaluate the value of y when x is 12

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?

Which strategy is used by public health to reduce the incidence of food poisoning?

If t8 = 4 and t12 = −2, find the first three terms of the arithmetic sequence.