Find the circumference of a CD with a diameter of 4.75 inches.

C = 4.75 pi inches or approximately 14.915 inches

Step-by-step explanation:

To find the circumference, we use the formula

C= pi *d

C = pi * 4.75

We can approximate pi by 3.14

C= 3.14* 4.75

C is approximately 14.915

The circumference is 15 inches (approximately)

Step-by-step explanation: If the circular CD has a diameter of 4.75 inches, then it’s radius would be given as diameter divided by two. That is,

Radius = 4.75 /2

Radius = 2.375

The circumference of a circle is given as

Circumference = 2Pi x r

Circumference = 2 x 3.14 x 2.375

Circumference = 14.915

Therefore the circumference of the CD to the nearest whole number equals 15 inches.

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.

the answer is a and d