Researchers surveyed recent graduates of two different universities about their income. The following two- way table displays data for the sample of graduates who responded to the survey.
How many graduates in the sample had an income of $40,000 and over?
graduates
Income
University A
University B
35
40
Under $20,000
$20,000 to $39,999
90
63
$40,000 and over
35
37

you should think about the answers you give and expect the same form your questions.

during a construction project, engineers used explosives to excavate 140 feet of tunnel into a mountain. but because of time constraints and environmental concerns, they brought in a tunnel boring machine (tbm) to excavate the rest of the tunnel. the data table lists some observations an engineer made about the length of the tunnel after the tbm was introduced.

which equation represents the length of the completed tunnel based on the number of days since tbm was introduced?

the answer is y = 45x + 140