The graph shows the distance, y, in miles, of a moving motorboat from an island for a certain amount of time, x, in hours: What is the speed of the motorboat? (1 point)

a
13 miles per hour

b
26 miles per hour

c
39 miles per hour

d
117 miles per hour

Which is the most efficient first step to solve x in the equation 3.7x - 18 = -4.3x -34 a. add 3.7x to both sides of the equation. b. add 4.3x to both sides of the equation. c. subtract 18 from both sides of the equation. d. subtract 34 from both sides of the equation.

This is so hard and it’s for a test

In need of in the diagram, ∠abc is a right angle. ∠dbc = 30°27'40". find the measure of ∠abd.