2 sandwiches and 3 croissants costs £11.

Short Answer: Current speed = 3 miles per hour. Given details for downstream distance of 4.48 miles at time 0.32 hours and upstream distance of the same 4.48 miles taking 0.56 hours. Using the equation d = r*t, we equate distances for both directions leading to a function in terms of the current speed. With each correction to solve ultimately yields the current speed as 3 mph.

We understand that a rectangle has been altered into the one shown in Figure 1 using this rule:



It is known that the origin is the center of rotation and two rules apply to perform a rotation of 90 degrees, namely:

1. Clockwise

The rule to convert a point in this case is:



This rule has already been implemented to create the image, so we need to reverse the outcome using this formula, hence:



2. Counterclockwise

Applying the same concept as before but with new rules for the scenario:



Reversing the outcome gives us:

It can be deduced that because line JL serves as a diameter for a circle, lines JK and KL function as the tangents of that circle. A tangent is defined as "a line that touches a curve at a singular point without intersecting it." Thus, both lines contact the perimeter of circle M, confirming they are tangents.