The first three terms of an arithmetic sequence are given. Find an expression for tn in terms of n, and write the tenth term for each sequence. PLEASE HELP ASAP!! a, 2a, 3a, . . .

tn = ?
t10 = ?

THANK YOU

On saturday morning, calls arrive at ticketmaster at a rate of 108 calls per hour. what is the probability of fewer than three calls in a randomly chosen minute?

Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys

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