Answer:
first one is yellow
Step-by-step explanation:
Answer:
$2000
Step-by-step explanation:
let x be the money she invested
lets assume this was for 1 year
0.09(x/2) + 0.07(x/2) = 160
multiply each side by 2 to cancel the denominators:
0.09x + 0.07x = 320
0.16x = 320
x = 2000

This is an exact answer. the answer will be a bit larger than 20
Answer:
x = 2
y = —3
Step-by-step explanation:
3x — 9 = —2x + 1
x = 2
y = —3