Answer:
The sum is
.
Step-by-step explanation:
Consider the provided information.
The given expression are - 10t and t - 10t
We need to find the sum of the opposite of -10 t and t - 10t.
The opposite of -10 t is 10 t.

Remove the parenthesis.

Simplify the number

Use Additive inverse.

Hence, the sum is
.
To find the maximum height, we must find the x value at which the maximum height occurs.
The maximum height occurs at x = 0 because that is where y is the largest.
When we plug x= 0 into the function that is given in the question, we get 630 ft.
Hope it helps!
Answer + Step-by-step explanation:


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15⁶ × 15³ = 15⁶⁺³ = 15⁹
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<u>Recall</u> : If a ≠0 ⇒ a⁰ = 1
Then
Since 6⁸ ≠ 0 ⇒ (6⁸)⁰ = 1