exam Maths Puzzle Numerical Ability

Please help me solve this: Clifford "TI" Harris went on a weekend trip. He averaged 35mi/h in the city and 60mi/h on the highway. If the 150mi trip took 3hrs, how much of the time was he driving in the city.

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exam Other Question

Solve each of the following systems by addition. If a unique solution does not exist, state
whether the system is inconsistent or dependent.

2x+3y =1
5x+3y=16 I have been struggling with this math problem for awhile now and I was wondering if anyone could help me? I would deeply appreciate it!! Please and Thank you!!

Multiplying Polynomials

Solve.
(x-3)(x+7)-(x+1)(x+5)=0