A. she needs 81sq ft
b. 202.5$
Answer: C. -3y+14
Step-by-step explanation:

Move 3y to ther right side.

So the answer is C. Because x = -3y+14.
Use the chain rule.
Let u = 25sin²(x), such that dy/dx = dy/du · du/dx


Answer:
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the equation is false</em></u></h2>
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Step-by-step explanation:
x - 10+ 9x = - 1 + 10x
-10 + 1 = -x - 9x + 10x
-9 = 0
the equation is false
Answer:

Step-by-step explanation:
Given

Required
The equivalent expression
We have:

Expand

Further expand

Apply laws of indices
