Answer:
C y = 1/3 x - 1
Step-by-step explanation:
The y-intercept is -1, so b = -1.
The slope is run/rise = 1/3
Equation:
y = 1/3 x - 1
The discriminant of the quadratic equation is -20 and there are two non real solutions.
The discriminant of a quadratic equation uses the equation:
Where the value of this calculation can tell you what solutions there are, plug known values in:
a=1
b=6
c=14
which is equal to -20 on putting the values of a,b and c in the equation
As -20 < 0, this means that there is not a real solution, resulting in the first option being correct.
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Answer:
x=7
Step-by-step explanation:
(4+7+x+1+x+3+x+4+14+16)/7=x+3
(11+x+1+x+3+x+4+14+16)/7=x+3
(49+3x)/7=x+3
49+3x/7=x+3
49+3x=7x+21
49=4x+21
28=4x
x=7
Given:
1970 price of dish washing detergent in a bottle : $0.50
CPI
1960 = 29.60
1970 = 38.80
1980 = 82.40
(82.40 - 38.80) / 38.80 = 1.124
1.124 x 100% = 112.4% rate of increase
$0.50 * 112.4% = $0.562 is the 1980 price of the dish washing detergent.