Suppose he invest x dollars in one account, y in the other
x+y=12,500
0.042x+0.062y=669.50
multiple the first equation by 0.042: 0.042x+0.042y=525
subtract this new equation from equation 2: 0.02y=144.50
y=7225
x=12500-7225=5275
Answer: This is a persuasion. Where he says "To attract new businesses to our shores, we need the fastest, most reliable ways to move people, goods, and information—from high-speed rail to high-speed Internet." He is stating the problem. Also where he says "I'm proposing that we redouble those efforts." he is prompting a solution to the problem. Furthurmore, he’s stating the problem and teaching you how to figure out the solution.
Step-by-step explanation:
Simple...
you have:

Graph is attached.
Some ordered on this line are-->>
Using x y
(-4,-0.5)
(-3,-0.667)
(-2,-1)
(1,2)
(3,0.667)
(4,0.5)
Thus, your answer.
Write the equation as such and narrow down x value being 4