At one factory the ratio of defective light bulbs produced to total light bulbs produced is about 3: 500. how many light bulbs are expected to be defective when 12,000 are produced

72 bulbs

Step-by-step explanation:

Given

Ratio of defective light bulbs produced to total light bulbs produced is about

3:500

that is if 503 bulbs are manufactured then 3 are defective

let x be the non-defective bulbs in 12000 bulbs

defective bulbs=

therefore

12000=Non-defective +defective

Therefore Defective bulbs =12000-11928=72 bulbs

option c) graph of line going through 1, 4 and 3, 10

step-by-step explanation:

let y equal to margo's coin collection

let x equal to number of years

at the begining x=0, y=1 → point=(x,y)→point=(0,1)

she adds 3 coins per year, then y=1+3x

at x=1, y=1+3(1)=1+3→y=4→point=(x,y)→point=(1,4)

at x=3, y=1+3(3)=1+9→y=10→point=(x,y)→point=(3,10)

the graph of line going through (1, 4) and (3, 10), then the option c is the correct.