book Maths Puzzle Numerical Ability

x+9=-7
x=-16

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book Other Question

The hiking club hiked to Robbers Cave State Park ar 4 mph. They got a ride back to town in a truck that went 20 mph. If the round trip took 18 hours, how far was it from town to the park? Hello. My name is kate and i was wondering if you could help me understand and complete these two problems.
For the expression 2x^2 - 5x + 2
A.Find the value of x if the