Answer:
20
Step-by-step explanation:
The nth term (an) of the arithmetic sequence is calculated through the equation,
an = a1 + (n - 1)(d)
where an is the nth term, a1 is the first term, n is the number of terms, and d is the common difference. Substituting the known values,
a72 = 5 + (72 - 1)(3)
a72 = 218
2x-3x+5=4x-3
combine terms: -1x+5=4x-3
add across: 5+3=4x+1x
solve: 8=5x
answer: 5/8=x
W^2 + 7w - 144
you need 2 numbers whose product is -144 and whose sum is +7
that is 16 * -9
so the factors are
(w + 16)(w - 9)