You can use a calculator or you could change the percent to a fraction. 20% is equivalent to 20/100.
So just multiply 150 by 20 and divide that answer by 100 to get a number of 30 CDs of boy bands
Answer:
B
Step-by-step explanation:
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I'm assuming this means solve for x in which case:
y=ax+b
y-b=ax
(y-b)/a = x
The point slope formula is y - y1 = m(x - x1)
the value x1 is the x coordinate of a point
the value y1 is the y coordinate of a point
the value m is the slope, which is 3
therefore, x1 = -2 & y1 = 1
Then, all you do is plug in the points:
y - 1 = 3(x + 2)
NOTE: It is 3(x + 2) instead of 3(x - 2) because the formula is (x - x1). If you plug x1 in, it is (x - (-2)). 2 negatives cancel out to be a positive, so it is (x + 2)
