Step-by-step explanation:
1. f+15<6
= f<6-15
f < -9
2. f+12 >16
f >16-12
f > 4
Answer:
5. You can round question a up to 100 + 55 (then do the counting)
5. You can round question b up to 245 - 100 (then do the counting)
You can round question c up to 100 x 5 (then do the counting)
You can round question d up to 100 x 20 (then subtract accordingly)
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Answer:
- <em>To solve these first swap x and y, solve for y and name it inverse function</em>
3. <u>y = -8x + 2</u>
- x = -8y + 2
- 8y = -x + 2
- y = -x/8 + 2/8
- y = -(18)x + 1/4
f⁻¹(x) = -(18)x + 1/4
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4.<u> y = (2/3)x - 5</u>
- x = (2/3)y - 5
- (2/3)y = x + 5
- y = (3/2)x + (3/2)5
- y = 1.5x + 7.5
f⁻¹(x) = 1.5x + 7.5
-----------------------------------------
5. <u>f(x) = 2x² - 6</u>
- x = 2y² - 6
- 2y² = x + 6
- y² = 1/2x + 3
- y =

f⁻¹(x) = 
-----------------------------------------
6. <u>y = (x - 3)²</u>
- x = (y - 3)²
= y - 3- y = 3 +

f⁻¹(x) = 3 + 
The answer to this is a=3