Two friends, Ryan and Tressa, are on vacation. They decide to go bungee jumping off a platform. Their height from the ground can be modeled by the function y = 4x^2-32x+80, where the x represents the time after they jumped and y represents their height above ground. How high is the platform off the ground?

80 units

Step-by-step explanation:

Step 1 :

Given,

The function representing the height is y = 4x^2-32x+80

where the x represents the time after they jumped and y represents their height above ground.

We need to find the platform's height.

Step 2 :

Since x represents the time after they jumped, x = 0 when they have not started jumping and the corresponding y will give the height before they start jumping which would be the height of the platform

Step 3:

When x = 0 we have

y = 0-0+80 = 80

So the height of the given platform is 80 units.

0.16 or 16%

step-by-step explanation:

lets take a coin for example.

if you toss it twice, it has a 1/4 chance of landing on heads both times because 1/2 * 1/2 is 1/4.

with the cards, the chance of picking dog is 0.4. having two people pick one is like picking a card twice in a row. so 0.4 * 0.4 is 0.16, or 16%