16+11+x side lenght and how do you round it

Siri can type 90 words in 40 minutes about how many words would you expect her to type in 10 minutes at this rate

Alex measured the length of an item to be 3.7 cm. the actual length is 3.5 cm. what is alex’s percent error?

The probability that a tutor will see 0, 1, 2, 3, or 4 students is given below determine the probability distribution's missing value.