Mitchell travels from the us to canada, where he exchanges 150 us dollars for canadian dollars. he then spends 20 canadian dollars, returns to the us, and exchanges the remaining money back to us dollars. how many us dollars does mitchell have remaining?

He has remaining 135 US Dollars. ( approx )

Step-by-step explanation:

Since, 1 US dollar = 1.32 Canadian dollars,

⇒ 150 US dollars = 150 × 1.32 = 198 Canadian dollars,

Thus, if he exchanges 150 US dollars for Canadian dollars,

Then, the canadian dollars he has initially = 198,

Now, after Spending 20 canadian dollars,

The remaining Canadian dollars he have after returining to US = 198 - 20 = 178,

Again, 1.32 canadian dollars = 1 US dollar

⇒

⇒

Hence, the remaining US dollars he have after returning to US is 135.

answer: c, the green line

step-by-step explanation:

there is no black line, eliminate b.

simple interest implies periodic payments, but the red line shows no payments, eliminate d.

simple interest has equal payments. if paid say every day, the graph is about a straight line (actually a stairstep).

the yellow line is not straight, eliminate a.

check: the green line is straight, answer is c.

simple interest with positive interest rate gives a straight line sloping up to the right. green line:

g(t) = $100 + ($200-$100) ÷ (20 years) × (t years)

= $100 + (4%/year) × ($100)(t years)

incidentally, the yellow line curving upward represents continuously compounded interest

y = $100 × 2^(t years / (14 assuming the yellow line hits $200 at 14 years. 2^0 is 1, so y(0) = $100; 2^(14/14) is 2, so y(14) = $200.