Use your knowledge about parentheses and substitution to solve the following: q = 1; r = 2; s = 3; t = 4; x = 5; y = 6 7. 2(x + 4) + 10 = 8. 3(6x) + 4 = 9. 10(xy) = 10. 5(x + y) = 11. 2(rs) + 4(x) 12. 2(q) + 2(x + t) = 13. 6(7t + 4s) = 14. 9(10x) + 10y = 15. 2x(xy) = 16. r(s)(t) = 17. (r)(s)(t)(x)(y) = 18. (7x + 2Y) =

if you are looking for the unit rate then the answer would be 9 because unit rate is distance divided by time.

step-by-step explanation:

answer: what is the question you're trying to ask?

step-by-step explanation:

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.