Which theme is found throughout the interview with Florence Griffith-Joyner ? A. Belief in oneself creates success.
B. Life is a long, difficult journey.
C. Appearances can be deceiving.
D. Growing up means changing.

it costs $20 to interview each person for a survey. find the cost to obtain a +- 3% margin of error.

step-by-step explanation:

copy and paste, put it in google

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.