Answer:
Step-by-step explanation:
k=3 or k=−7 both choices are correct
Use cos sin and tan and looks up rules of cos sin tan and it will show you the rules and use those methods to plug into your equation
Answer:
The least number of stamps required is 
Step-by-step explanation:
Let the number of
cent stamps be
and
cent stamps be 
We have

The minimum number is obtained when more
cent stamps are used
Here
cannot be greater than
since 
Substitute 

Not possible since
is not a fraction
Substitute 

Not possible since
is not a fraction
Substitute 

Possible
Hence minimum number of stamps is

Answer:
4
Step-by-step explanation:
Answer:
$1,635
Step-by-step explanation:
she makes $45 a year so if you multiply that by 3 you get $135