he function
h(x)=−16x
2
+80x
represents the height of a rocket in feet, h(x), after x seconds. The rocket's height, in fee, after 3 seconds is feet.
To find the height of the rocket after 3 seconds, substitute x = 3 into the function h(x).
h(3) = -16(3)^2 + 80(3)
Simplifying,
h(3) = -16(9) + 80(3)
h(3) = -144 + 240
h(3) = 96
Therefore, the rocket's height after 3 seconds is 96 feet.
To find the height of the rocket after 3 seconds, we can substitute x = 3 into the given function, h(x) = -16x^2 + 80x.
Substituting x = 3 into the function:
h(3) = -16(3)^2 + 80(3)
Simplifying the equation:
h(3) = -16(9) + 240
h(3) = -144 + 240
h(3) = 96
Therefore, the height of the rocket after 3 seconds is 96 feet.
To find the height of the rocket after 3 seconds, we need to substitute x = 3 into the function h(x) = -16x^2 + 80x. Let's calculate it step by step:
Step 1: Start with the function h(x) = -16x^2 + 80x.
Step 2: Substitute x = 3 into the function: h(3) = -16(3)^2 + 80(3).
Step 3: Simplify the expression inside the parentheses: h(3) = -16(9) + 80(3).
Step 4: Calculate the values inside the parentheses: h(3) = -144 + 240.
Step 5: Combine like terms: h(3) = 96.
Therefore, the height of the rocket after 3 seconds is 96 feet.