Answer:
70=50+3.5=70 therefore the answer is 3.5
A)
The slope-intercept form:

m - slope
b - y-intercept
The formula of a slope:

We have the points (2, 5.1) and (-1, -0.5). Substitute:

Therefore we have:

Put the coordinates of the point (-1, -0.5) ot the equation:

<em>multiply both sides by 2</em>
<em>add
to both sides</em>
<em>divide both sides by 2</em>

Answer: 
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B)
We have the points (-2, 3) and (3, -4).
Calculate the slope:

Therefore we have:

Put the coordinates of the point (-2, 3) to the equation of a line:

<em>subtract
from both sides</em>

Answer: 
Adding up the whole hours first is 5+6+4 = 15. Adding the fractions is 1/2 + 3/4 + 1/2 is 1 3/4
This is 16 3/4 (answer c)
Answer:
Hiii the answer would be a= -4b+8/3