Answer:
1) Your slope should be 1/5
2) Your slope should be 
3) Your slope should be 1/2
I hope this helps! : )
Answer:
a. at zero years of education, income equals $1500
Step-by-step explanation:
The equation for income 'I', as a function of years of education 't' is given by:

Where b is the regression coefficient and a is the intercept.
The intercept is the value assumed by the function for t = 0 years of education:

Since the income function measures income in $1,000s, at zero years of education, income equals $1500
The answer to your question is 74/99:D
D. -4/3
Let's solve your equation step-by-step.
9x2+24x+20=4
Step 1: Subtract 4 from both sides.
9x2+24x+20−4=4−4
9x2+24x+16=0
Step 2: Factor left side of equation.
(3x+4)(3x+4)=0
Step 3: Set factors equal to 0.
3x+4=0 or 3x+4=0
x=
−4
/3
Hope This helps
I cant see Jo's error...but the correct way is this :
-41.71 rounds to -42
-6.03 rounds to -6
so the quotient is : -42/-6 = 7 <==