Answer:
Step-by-step explanation:
we would like to figure out the derivative of the following:
to do so, let,
By simplifying we acquire:
use law of exponent which yields:
take derivative in both sides:
use sum derivation rule which yields:
By constant derivation we acquire:
use exponent rule of derivation which yields:
simplify exponent:
two negatives make positive so,
by law of exponent we acquire:
simplify addition:
and we are done!
Answer:
<em>Donna will have to pay $67.985125 at the register, including the 7% sales tax.</em>
Step-by-step explanation:
Donna bought 3 pairs of pants for $28.50 each.
So, the cost for 3 pair of pants dollars.
She also bought a necklace for $12.25
Thus, the cost for her entire purchase will be: dollars.
She received a discount of 35% off her entire purchase. So, the amount of discount dollars.
Thus, the total selling price will be: dollars.
Percentage of sales tax is 7%. So, the amount of sales tax dollars.
Thus, the total amount Donna have to pay at the register dollars.