−4x + 7y + 5 = 0
x − 3y = −5

how many solutions does the system have?

a. exactly one solution
b. no solutions
c. infinitely many solutions

if your answer was exactly one solution, what is this solution?

134.6 us dollars

step-by-step explanation:

1 us dollar = 1.33 canadian dollars

so, 150 us dollars = 150 × 1.33 = $199.5.

in canada, the money mitchell spent = 20 canadian dollars.

remaining canadian dollars with him = 199.5 - 20 = 179.5.

after mitchell returned to us, he exchanged the remaining canadian dollars to us dollars.

179.5 canadian dollars = 179.5 × 0.75 = 134.6 us dollars.