Jim types 70 words per minute. today, he sat at his computer to finish a document he had started yesterday. after jim typed for 3 minutes, the document had a total of 400 words. how many words were already in the document before jim opened it today?

Find the value of 1715⋅211.though these numbers aren't quite as nice as the ones from the example or the previous part, the procedure is the same, so this is really no more difficult. give the numerator followed by the denominator, separated by a comma.

Find the equation of the trend line (line of best fit). show your work i'm using the points (34,76) (42,91)

Each month, a shopkeeper spends 5x + 14 dollars on rent and electricity. if he spends 3x−5 dollars on rent, how much does he spend on electricity? for which value(s) of x is the amount the shopkeeper spends on electricity less than $100? explain how you found the value(s).