LO$\mathrm{.}2$ Determine the amount of the standard deduction allowed for $2021$

in the following independent situations. In each case, assume that the taxpayer

is claimed as another person's dependent.

a$.$ Curtis, age $18,$ has income as follows: $$700$ interest from a certificate of deposit

and $$12,600$ from repairing cars.

b$.$ Mattie, age $18,$ has income as follows: $$600$ cash dividends from investing in

stock and $$4,700$ from working as a lifeguard at a local pool.

c$.$ Jason, age $16,$ has income as follows: $$675$ interest on a bank savings account

and $$800$ for painting a neighbor's fence.

d$.$ Ayla, age $15,$ has income as follows: $$400$ cash dividends from a stock invest$-$

ment and $$500$ from grooming pets.

e$.$ Sarah, age $67$ and a widow, has income as follows: $$500$ from a bank savings

account and $$3,200$ from babysitting.