Answer:
7.3
Step-by-step explanation:
The two triangles are similar, meaning that they have the same angles but the triangles are in different sizes. To solve this, use proportions:

Cross multiply:

Part A=B
part B=1480
if you add them up and multiply by 6 you get 1020
2500-1020=1440
B!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
D
Step-by-step explanation: The vertex is where the curve of the parabola occurs. Pay attention to where the curve of the parabola exists, and write down its coordinates. Over here, the curve is on 3 of the x-axis, and the y-value is 0 because the curve is literally on the x-axis. Any point that is on the x-axis will have no y-value. Hence our answer is (3,0).