This is for the one with the green background :) I corrected a few of the errors that collided with the answers for the 3 qns you didn’t know. Hope this helps!!!
what are you asking im confused
Answer: C
<u>Step-by-step explanation:</u>
f(x) = 26.2 - 0.1x
f(100) = 26.2 - 0.1(100)
= 26.2 = 10.0
= 16.2
f(5-) = 26.2 - 0.1(50)
= 26.2 - 5.0
= 21.2
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Answer: D
<u>Step-by-step explanation:</u>
f(x) = 2|x - 3| + 1
2 units right: f(x) = 2|x - (3 + 2)| + 1
= 2|x - 5| + 1
Answer:
x = -1.
Step-by-step explanation:
√(x + 10) - 4 = x
√(x + 10) = x + 4
Squaring both sides:
x + 10 = x^2 + 8x + 16
x^2 + 8x - x + 6 = 0
x^2 + 7x + 6 = 0
(x + 6)(x + 1) = 0
<u>x = -6, -1.</u>
Check for any extraneous roots:
√(x + 10) - 4 = x
<u>Try x = -6:</u>
√(-6 + 10) - 4 = 2 - 4 = -2.
but we found x = -6 , so -6 is not a root.
<u>Try x = -1</u>:
√(-1 + 10) - 4 = 3 - 4 = -1. So x = -1 is a root.
