Rachel travelled 240 km in 4 hours by train and then travelled 120 km in 3 hours by car. What is the average speed during the whole
journey?
A. 60.9 km/hr
B. 55 km/hr
C. 51.42 km/hr
D. 78 km/hr

Cherie measures and records the lengths and sizes of the same style of a sandal found at a shoe store. which equation can be used to determine the approximate shoe size, s, for a foot length of x inches? s = x – 2 s = 2x – 10 s = x + 6 s = 2x + 4

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.