15) Mrs Jones is planning a birthday party for next weekend and wants to rent an inflatable for the children. Party Pop-ups charges a $75 delivery fee and a $30/hour fee for the duration of the party. Incredible Inflatables
charges a $50 set up fee and $40/hour for the rental. After how many hours will the two companies charge the
same amount?

The distance of a chord from the centre of a circle is 12cm and the lenght of the chord is 10cm. find the radius of the circle

Acompany made a profit of 75000 over a period of 6 years on an initial investment of 15000 what is the annual roi

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (–4, 0) and (6, 0). the y-intercept of the first parabola is (0, –12). the y-intercept of the second parabola is (0, –24). what is the positive difference between the a values for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth