3. Francisco is a 23-year-old lifeguard. He owns a $12,000 Jeep Wrangler with $7,500 left on the auto loan balance. He just got the iPhone 13 Pro Max and plans to pay off the $1,099 cost with
monthly payments. He has a degree in computer science and $35,900 in student loan debt. He
has a total of $83.26 in his checking and savings accounts combined. He shares an apartment
with his former college roommate, and he opened an investment account when he was 18 that
currently has a balance of $10,704.
What is Francisco's net worth?

a is the correct

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have