exam Maths Puzzle Numerical Ability

How do you do this?
Use the expression r+0.12m to calculate the cost of renting a car. The basic rate is r. The miles driven is m.Determine the cost for the following.

The basic rate is $15.95.The car driven is 150 miles.

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exam Other Question
The sum of two numbers is 40. If twice the larger number is divided by the smaller, the quotient is 3 and the reminder is 10. Find the number. I NEED HELP. PLEASE!!!! The answer is 26 or 14, but I do not know how to get there. Please help me find the domain and range of f(x), g(x) and h(x)

f(x)=25-7x g(x)=13 h(x)= x^2 +22x



Thanks