the equation (x+7)(x-1)=-16 has a. two real solutions b. one real solution c. two complex solutions d. no solution
2 answers:
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He walked 5 miles.
Solutions (via elimination or substitution) are:
x is the number of hours he spent walking, and 5x is the number of miles he walked.
. He walked for 5 miles.
y is the number of hours he spent on the bus, and 60y is the number of miles he rode on the bus.
. He rode the bus for 30 miles.
Solutions (via elimination or substitution) are:
x is the number of hours he spent walking, and 5x is the number of miles he walked.
y is the number of hours he spent on the bus, and 60y is the number of miles he rode on the bus.