If a and b are numbers, and a x b = 0, then: a.
Both a and b must equal 0.
b.
Neither a nor b can equal O.
C.
Either a = 0 or b = 0.
d. a + b must equal 0.

the answer would be 150 books

step-by-step explanation:

if you divide 300 by 2 you will get 150

10

step-by-step explanation:

sina-sinb

cosb+cosa

tana-tanb

cos0+cos x pi/3

20tan

step-by-step explanation:

step-by-step explanation:

let's assume

number of candles set =x

price of of x candles =p(x)

we are given

a candle maker prices one set of scented candles at $10 and sells an average of 200 sets each week

so, we get point as (200,10)

he finds that when he reduces the price by $1, he then sells 50 more candle sets each week

so, we can find slope

now, we can use point slope form of line

now, we can plug values

we can use point

and find b

now, we can plug it back

and we get

now, we can find revenue

we know that

revenue = price*quantity

so, we get