Determine the value of the missing letters in the sum of numbers below:
ab1
+ ba
abb
49x

Which is a reasonable estimate of the amount of water in a small, inflatable pool used by children?

Which of the following is most likely the next step in the series? a3z, b6y, c9x, d12w, е15v, f18u

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label