Frank has saved $15 towards the $95 phone he want to buy . he makes $5 per week delivery papers. how many weeks must he work until he has enough money ?

16

Step-by-step explanation:

95/5=19

19-3=16

3 is the money he already saved in weeks

3x + 4y -25 =0 represents the amount of change sianna should recieve

this is the formula: v = the value of investment at the end of the time period

p = the principal amount (the initial amount invested)

r = the annual interest rate

n = the annual frequency of compounding (how many times a year interest is added)

t = the number of years the money is invested

^ means raise to the power of