To use mental math think instead of 81 to 80 and 16 to 10 and subtract that and add the other numbers and subtract that and you will have your answer presto!
The first thing you should do is subtract 5 from each side to get y alone on one side.
y=3x-14
The y intercept is the number that does not have a variable attached to it. In this case it would be 14.
The y intercept is 14
Answer:
y = 200·1.15^t
Step-by-step explanation:
The ratio from one year to the next is 1.15, so the balance is a geometric sequence. Since t starts at zero, we can write the balance (y) after t years as ...
y = initial value · (common ratio)^t
y = 200·1.15^t
Answer:
its just inch
Step-by-step explanation:
you would multiply the 3 and the other three and you would get 9
Answer:
x = -3.5
Step-by-step explanation:
First we create the equation.
Let x = the unknown number
7x-1 = 5x - 8
Add 8 to both sides
7x + 7 = 5x
Subtract 7x
7 = -2x
Divide by 2
-7/2 = x
-3.5 = x