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
Answer:
see explanation
Step-by-step explanation:
The nth term of an AP is
= a₁ + (n - 1)d
where a₁ is the first term and d the common difference
Given a₅ is double a₇ , then
a₁ + 4d = 2(a₁ + 6d) , that is
a₁ + 4d = 2a₁ + 12d ( subtract a₁ from both sides )
4d = a₁ + 12d ( subtract 12d from both sides )
- 8d = a₁
The sum of n terms of an AP is
=
[ 2a₁ + (n - 1)d ] , substitute values
=
( 2(- 8d) + 16d)
= 8.5(- 16d + 16d)
= 8.5 × 0
= 0
<h3>Question:</h3>
find the slope (-8,10) (8,15)
<h3>Answer:</h3>
m = 
<h3>Step-by-step explanation:</h3>
Use the slope formula 
(x2,y1) = (-8,10) , (x2,y2) = (8,15)
m = 
m = 
Hope this helps :)
Please consider marking my answer brainlist!
Enlargement of 2.
if it were a reduction it'd be getting smaller..
Answer: 7/12 lbs
A baker buys a 5 lb bag of sugar. She uses 1 2/3 lb to make some muffins and 2 3/4 lb to make a cake. How much sugar does she have left?