Answer:
61 words
Step-by-step explanation:
He can type 61.75 words per min.
To find one, aka per minute, u have to do 247 / 4.
247 / 4 = 61.75
Hope this helps.
1109
an = d (n - 1) + c
an = what you're looking for
n = term position
d = the common difference, in your case, 16
c = first term of the sequence, or -27
a₇₂ = 16(72 - 1) + -27 = 1109
29
6 + 3 x 9 - 4
6 + 27 - 4
33 - 4
=29
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