What would be the interest rate p. a to invest $2000 compounding half_yearly for 4 years to earn $5000?

24,27% interest rate.

Step-by-step explanation:

The compound-interest equation is as follows:

Fv=Pv(1+i/n)^(an)

Fv is future value

Pv is present value

i is interest in decimals

n is compount frequency per year

a is lenght of time in years

To easily find the interest rate manipulate the formula to look like this (see pic). Note interest is in decimals and will have to be multiplied by 100 to get %.

answer:  

123455421

step-by-step explanation: easy

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.