A substance’s decay function is represented by the equation y=10(0.87)x, where x is in hours. How long will it take until only 2.5 units of the substance is left? Justify your reasoning. Answer in complete sentences.

the least value out of the data shown is 5, maybe if you post a picture with it i could a little more.

step-by-step explanation:

1/3 + 1/5 = 8/15.

step-by-step explanation:

hope it

the answer is 24

step-by-step explanation:

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.