

Multiply eq(1) by 2 and eq(2) by 1




Now
Put in eq(1)






At 3 seconds, the firework is at a height of 150 feet
Answer is C. third option
The firework is at a height of 150 feet
Your answer is A
hope this helped
to get this answer you multiply 475 by 1.75% and then you get 8.31
For this case we have that by definition, the point-slope equation of a line is given by:

Where:
m: It's the slope
b: It is the cut-off point with the y axis
We have two points:

We found the slope:

Thus, the equation is of the form:

We substitute one of the points and find "b":

Finally, the equation is:

Answer:
