Answer:
c
Step-by-step explanation:
Answer:
see explanation
Step-by-step explanation:
Note that 9x² and 49y² are perfect squares.
9x² = (3x)² → 3x is the first term
49y² = (7y)² → 7y is the second term
Hence
(3x + 7y)² = 9x² + 42xy + 49y²
Carl's cable
4x + 55
Teleview cable
110
4x + 55 < 110
4x < 110 - 55
4x < 55
x < 55/4
x < 13.75 movies per month
Answer:
d, 700
Step-by-step explanation:
it's the only one that makes sense