Answer:
-11/12
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
An approximation of an integral is given by:

First, find Δx. Our a = 2 and b = 8:

The left endpoint is modeled with:

And the right endpoint is modeled with:

Since we are using a Left Riemann Sum, we will use the first equation.
Our function is:

Therefore:

By substitution:

Putting it all together:

Thus, our answer is C.
*Note: Not sure why they placed the exponent outside the cosine. Perhaps it was a typo. But C will most likely be the correct answer regardless.
Answer:
3000
Step-by-step explanation:
If they spend 60% of their income, they save 40% of their income
Let x be their income
x * 40 % = 1200
.40x = 1200
Divide each side by .4
x = 1200/.4
x =3000
Answer:
5 and 3/5ths is the answer to your question