Answer:
the interest earned= 93.401
and the future value of an annuity= 493.401
Step-by-step explanation:
Given Data:
Interest rate= 7%
time,t = 3 years
weekly payment, P= 400
At the end of 3 years, final investment A= ?
n= 52 as it is weekly
As per the interest formula
A= P(1+r/n)^nt
Putting value in above equation
= 
= 493.401
Interest earned = A-P
= 493.401-400
= 93.401 !
We can change the sign of the second term, so that the two parenthesis are the same:

Now, both terms have in common a 3, becase the numeric factors are 3 and 6. If we factor the 3, we have

The parenthesis (a-1) is also in common, so we can factor it as well:

Finally, both terms in the parenthesis contain
, because it's the power of b with the lowest exponent:

So, the factorization is

You can swap the order of the four factors (3, b^2, a-1 and 2b-1) as you like: the multiplication is commutative.
Answer: Simon paid $13.55 for the snack.
Plz mark brainliest ;)
Answer:
Step-by-step explanation:
cos(210)=cos(180+30)=-cos 30
