1)
f(x) = x² + 9 g(x) = 24 + 4x
f(4) = (4)² + 9 g(-1) = 24 + 4(-1)
= 16 + 9 = 24 - 4
= 25 = 20
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g(x) = 2ˣ - 4 f(x) = 4x² - 5x - 5
g(6) = 2⁶ - 4 f(-5) = 4(-5)² - 5(-5) - 5
= 64 - 4 = 100 + 25 - 5
= 60 = 120
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f(x) = (3x + 7)²
f(1) = (3(1) + 7)²
= (3 + 7)²
= (10)²
= 100
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3xy + 2x² - y³ ; when x = 6 and y = -2
3(6)(-2) + 2(6)² - (-2)³
-36 + 72 - (-8)
36 + 8
44
For f(x), the function uses the following formula:
The y-intercept in this formula is represented by c.
f(x) has a c value of -4, so the y-intercept of f(x) is -4.
For g(x), the y-intercept is found when the graph cross the y-axis.
g(x) cross the y-axis at y = 0, so the y-intercept of g(x) is 0.
For h(x), the y-intercept is found by taking the output at x = 0.
At x = 0, the y value that is output is -2, so the y-intercept is -2.
Compare the three y-intercepts:
The function with the greatest y-intercept is g(x), with a y-intercept of 0.
<span>
Experimental probability is the ratio of the number of times an event occurs to the total number of trials or times the activity is performed.</span>
Treat like a fraction
7/42
42=7*6
7/(7*6)=1/6
ratio is 1:6
