Answer:
d
Step-by-step explanation:
I think its d but I'm not quite sure
Answer:
Adult ticket: $7
Child ticket: $2
Step-by-step explanation:
Set up a system of equations where a represents the cost of one adult ticket and c is the cost of one child ticket:
2a + 3c = 20
a + 4c = 15
Solve by elimination by multiplying the bottom equation by -2:
2a + 3c = 20
-2a -8c = -30
Add them together:
-5c = -10
c = 2
Now, we can plug in 2 as c to find the value of a:
2a + 3c = 20
2a + 3(2) = 20
2a + 6 = 20
2a = 14
a = 7
The equation

<span>sets the parabola. You can find the parabola vertex as:
</span>

then

This means that the maximum height is 11.375 m and <span>a projectilereaches this height at 1.25 seconds.</span><span /><span>
</span><span>
</span><span>The projectile initially launched at time t=0, so the initial height is h(0)=2 m</span>