Answer:

Step-by-step explanation:
so when you multiply two numbers with the same constant, and different exponents, just add the exponents!
so it is 5 - 3 = 2
so its 
Answer:
its the 1st one
Step-by-step explanation:
they need to know what the Total
Answer:
x+75=180
x=180-75
x=105
Step-by-step explanation:
x and a are on a straight line
a straight line=180
so you add the x to a=180
Answer:
y = 1.5x + 3.2009
Step-by-step explanation:
I plotted your points and drew a linear regression line.
Its equation is
y = 1.5x + 3.2009
The regression line ignores the fact that the points fall along a smooth curve.
A parabolic regression line fits the data much better.
The equation for that line is
y = - 0.1647x² + 4.1357x - 5.6946
It is the equation for a vertical parabola opening downward.