Two bus services A and B arrive at a station. Service A has a frequency of arrival of 15 mins while Service B operates with a frequency of 20 mins. The first buses arrive at 8am.
When will they arrive at the station together the next time.

The graph below shows the price of different numbers of mats at a store: a graph is shown. the values on the x axis are 0, 2, 4, 6, 8, 10. the values on the y axis are 0, 21, 42, 63, 84, and 105. points are shown on ordered pairs 0, 0 and 2, 21 and 4, 42 and 6, 63 and 8, 84. these points are connected by a line. the label on the x axis is number of mats. the title on the y axis is price in dollars. which equation can be used to determine p, the cost of b mats?

Which of the binomials below is a factor of this trinominal? x^2-13+30

Bob the builder is making 480kg of cement mix. this is made by cement, sand and gravel in the ratio 1: 3: 4