exam Maths Puzzle Numerical Ability

write an algebraic expression to represent the cost of M gallons of gasoline if each gallon cost $1.45

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exam Other Question

Can someone solve this problem for me?

solve by using quadratic formula

x^2-4x-60=0
two jets are traveling towards each other and are 4000 km apart. The rate of one jet is 100 km/h faster than the rate of the other. if the jets pass each other after 2.5 hours, what is the rate of the faster jet?