Answer:
Question 2 I believe is (-2,3)
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Question 4
Independent variable- the number of minutes mike uses on his cell phone
Dependent Variable- The number of minutes that are left
Answer:
C
Step-by-step explanation:
Given
x² - 3x - 12 = 0 ( add 12 to both sides )
x² - 3x = 12
To complete the square
add ( half the coefficient of the x- term )² to both sides
x² + 2(- )x + = 12 +
(x - )² = ( take the square root of both sides )
x - = ± = ± ( add to both sides )
x = ±
Then
x = + ≈ 5.27 ( to the nearest hundredth )
x = - ≈ - 2.27 ( to the nearest hundredth )
Answer:
2
Step-by-step explanation:
To evaluate the expression substitute t = 4 into the expression, that is
8/t = 8/4 =2
A = $12105; P = $19400; t = 3 (yrs)
Then $12105 = $19400(1-r)^3, or
0.6240 = (1-r)^3
Take the cube root of both sides. Then 0.854 = 1 - r, or r = 1 - 0.854 = 0.145 (answer) 0.145 is a decimal fraction.