An object is launched from a platform. Its height (in meters), x seconds after the launch, is modeled by: h(x)=−5x2+20x+60 what is the height of the object at the time of the launch (answer in meters)

60 meters

Step-by-step explanation:

We are looking for the height when x = 0. When x is equal to zero, we get the y-int and height of 60.

all three statements are true

step-by-step explanation:

a shipping fee of 5% is charged online with every item purchased online

first let's just take each option and calculate them based on this, to see if the answers matched

keith buys a 40 dollar book

40 x 0.05 = 2

therefore there will be a two dollar fee on keith's book

40 + 2 =42

the first statement is true

a chair costs $80

80 x 0.05 = 4

80 + 4 = 84

the second statement is true

george buys a 20 dollar calculator

20 x 0.05 = 1

20 + 1 = 21

the third statements are true

all three statements are true

the area of ​​the surface of the rectangular prism here is 250 cm2, which is the surface of the shading

step-by-step explanation: