Answer:
I think the 3rd answer
Step-by-step explanation:
Answer: 500 investigated @ 12%, 1,000 @ 13%, 1,500 @ 14%.
Process:
Suppose $x investigated at 12%, $y @ 13%, $(x+y) @ 14%.
According to the question we can set up the equations:
x+y+x+y=3000
0.12x+0.13y+0.14(x+y)=400
Solve it: x=500, y=1,000.
So x+y=1,500.
Answer:
Marco has $57.50 in total.
Step-by-step explanation:
17 x 10 = 170 quarters
170 x 0.25 = $42.50
11 x 10 = 110 dimes
110 x 0.10 = $11.00
8 x 10 = 80 nickels
80 x 0.05 = $4.00
2.25 for the first box
5 is the answer under the 11.25 box and it equals 2.25
15.75 is the top answer and it equals 2.25
The constant proportionality is 2.25
y=2.25x
Yes they’re proportional and the equation is y=1.3x
Let me know if that makes sense
