1. Evaluate the following for x= -6 and y= 3
a. 3×(-6)²-4×(-6)×3-6×3²
3×6²-4×(-6)×3-6×3²
3×6²+4×6×3-6×3²
3×36+4×6×3-6×3²
3×36+4×6×3-6×9
108+4×6×3-6×9
108+72-6×9
108+72-54
180-54
126
b. (-6)³-3×(-6)²×3+3×(-6)×3²-3³
-6³-3×(-6)²×3+3×(-6)×3²-3³
-6³-3×6²×3-3×6×3²-3²
-216-3×6²×3-3×6×3²-3³
-216-3×36×3-3×6×3²-3³
-216-3×36×3-3×6×9-3³
-216-3×36×3-3×6×9-27
-216-324-3×6×9-27
-216-324-18×9-27
-216-324-162-27
-729
2. Due to enhance community quarantine, Chona has time to read about 70 pages of a novel a day
Solution A:
Chona can read about 60 pages of a novel a day, it takes chona as many days as x has 60's. so the expression is x/60
A: x/60
Solution B:
let the x in the x/60 equal to 240, so {240 ÷ 60 = 240/60 = 4} chona will take 4(240/60) days to read the 24 pages.
B: 4 days
hope it helps
