Book Maths Puzzle Co-ordinate geometry

The model y = 135 + 25 x represent the cost of renting a car, where x is the number of days the car is rented.

a) What is the y-intercept for this model? Describe what this number represents in terms of the variables in the model.

b) What is the slope for this model? Describe does this number mean in terms of renting a car.

c) Evaluate the model for x=4. Describe what the ordered pair in terms of renting a car.

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Book Other Question
Use the rules of exponents to simplify the expression ( if possible ).

1. (a) 5 2y 4 . y 2

(b) (5y) 2 . y4

2. (a) ( - 5z 3) 2

(b) ( - 5z ) 4 tom loaned gail some money at an 8% interest rate, and he loaned george half as much money as gail but a twice the interest rate. Both loans were for one year. After one year Tom m