Choose all the expressions that will result in a positive answer. a. -3 + - 9 =
b. a(b) =
c. -43 - (-55) =
d. -3 x -9 =
e. 4 x 9 x -3 x -1 x 12 =
f. (-3 + 4) x -5 =

B, C, E, F

Step-by-step explanation:

I believe sorry if im wrong

the right system of equations to describe the situation would

be on the form:

x1 = 8000 + y1*t

and

x2 = 8000 + y2*t

where x1 and x2 represents the total money of imogene and her

friend respectively at the end of t years.

now for the value of amount earned, y1 and y2:

y1=8000*0.08

y2=2000*√(t-2)

20

step-by-step explanation: