A road has a gradient of 1/15 for 90 m. Then there is a horizontal section 130 m long. The final section has a gradient of 1/25 for 200 m.
a Find the total height gained from start to finish.
b What is the average gradient from start to finish?​

What is the inverse of the function f(x) = 2x + 1?

Kapil needed to buy a long wooden beam. he went to two sawmills that each charge an initial fee plus an additional fee for each meter of wood. the following equation gives the price (in dollars) of a wooden beam from the first sawmill as a function of its length (in meters). p = 5+20xp=5+20x

True or false? a circle could be circumscribed about the quadrilateral below.