I had this one before. I'm pretty sure it is 1.61
Answer:
y = 20*4^x
Step-by-step explanation:
to find the value of the constants a and b, we just need to use the points given in the equation and solve the system of equations:
point (0,20): x = 0 and y = 20:
20 = a*b^0 = a*1 = a
a = 20
point (2,320): x = 2 and y = 320
320 = 20 * b^2
b^2 = 16
|b| = 4
b = 4 or b = -4
So we have two exponencial equations that pass through these points:
y = 20*4^x and y = 20*(-4)^x
As the questions asks for just one equation, we can answer y = 20*4^x
<span>In 3x - y = -1
-y = -3x - 1 {subtracted 3x from both sides to get into slope-intercept form}
y = 3x + 1 {divided both sides by -1}
the slope is 3 {the number in front of the x}
The slopes are the same in both equations, therefore
the lines are parallel.</span>
Look up on desmos it will give the correct answer
Answer:
P = -30
Step-by-step explanation:
first, you need to move the virable to one side:
3/4P - 4/5P = 3/2
second, you make the denominator the same:
15/20P - 16/20P = 3/2
-1/20P = 3/2
third, you will divide it both side of -1/20:
-1/20 -:- -1/20P = 3/2 -:- -1/20
P = 3/2 x -20/1
P = -60/2
P = -30