(05.05 HC) The graph shows the distance, y in miles, of a moving train from a station for a certain period of time, x, in hours: What is the speed (in miles per hour) of the train?
A. 100 mile per hour
B. 50 miles per hour
C. 150 miles per hour
D. 400 miles per hour

What are the soultion(s) to the quadratic equation 40- x^2=0

Agroup of students want to create a garden. they do not know the exact measurements but they propose using a variable to represent the length and width of the garden. the length of the garden is 10 feet longer than double the width. use a single variable to write algebraic expressions for both the length and width of the garden. write an algebraic expression for the area of the garden. use mathematical terms to describe this expression.

Which equation is true? i. 56 ÷ 4·7 = 82 ÷ (11 + 5) ii. (24 ÷ 8 + 2)3 = (42 + 9)2 neither i nor ii ii only i and ii i only