Answer:
f(x)=2x^2+3
Step-by-step explanation:
If you see the f(x), you can see that it is squished by a factor of 2, and it is translated upwards 3 units. that means that the final equation is f(x)=2x^2+3, which is B
Answer:
95
Step-by-step explanation:
Required Average
=
80
Let the required grade be
x
.
Average
=
Sum of
n
numbers
n
So
80
=
76
+
84
+
65
+
x
4
320
=
225
+
x
x
=
320
−
225
x
=
95
Therefore, the required grade is
95
.
<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.
Answer:
3 mph
Step-by-step explanation:
So the average speed is simply: 
. In case, the total time is 25 minutes + 55 minutes which is a total of 80 minutes, or 1.33 hours. The total distance traveled is two miles + two miles, since he jogged two miles to the park, and then he turns around and walks the same path. So in total he traveled 4 miles. Plugging this in to the formula gives you the equation: 
Answer: 9/7
Step-by-step explanation:
