Sandra wants to buy a dress that is on sale for 20% off. Sandra also gets a 5% discount for being a member of the store's buyer'
s club. Her buyer's club discount is taken off the sale price of any item. If the original cost of the dress was c dollars, which of the following expressions represents what Sandra would pay, in dollars, for the dress?
1 answer:
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<u>Given</u>:
The height of the bird at time t is given by the function
We need to determine the time it takes the worm to be eaten by the bird.
<u>Time taken:</u>
The time can be determined by substituting h(t) = 0 in the function.
Thus, we have;
Switch sides, we get;
Let us solve the equation using the quadratic formula.
Thus, we get;
Simplifying, we get;
The values of t are given by
and
and
and
Since, the value of t cannot be negative, then
Thus, the time taken by the bird to eat the worm is seconds.
Hence, Option B is the correct answer.