The function rule for the input/output table is to multiply by 3.5. what number completes the table?
y = (3.5)x
x y
2 7
3 10.5
5 17.5
8 ?
options
28
21
11.5
4.3

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.

i believe your answer is 99.7% of 7-year-old children are between 46.6 inches and 49.5 inches tall.