Answer:
$22,640 if we use the standard deduction available for 2019 (filing due April 15th, 2020)
Step-by-step explanation:
Bertha's adjusted gross income = $34,700 + $140 = $34,840
since she has no dependents, she can only claim a $12,200 standard deduction (for 2019 revenue, filing due April 15th, 2020)
to calculate line 6, you subtract the standard deduction from the adjusted gross income = $34,840 - $12,200 = $22,640
*on previous years the standard deduction was $9,350 (answer would have been $25,490) or $10,400 (possible answer $24,440).