Answer in the pic. Use substitution.
Answer:
5/7
Step-by-step explanation:
y2-y1/x2 -x1
3 - (-2)/9-2
3+2/9-2
5/7
Cross multiply
2(11-x) = 1(3x+2)
Distribute
22-2x = 3x+2
Subtract 22 from both sides
-2x = 3x-20
Subtract 3x from both sides
-5x = -20
Divide both sides by -5
x=4
Answer:
$1054
Step-by-step explanation:
simple interest = 4% of original amount each time
850/100 = 8.5 = 1%
8.5 x 4 = 34 = 4%
34 x 6 = 204
$850 + $204 = $1054