Aspeedboat traveling at a constant speed arrives at its destination in 35 minutes. if it travels 70 miles, then what was the speedboat’s speed?

120 mph

Step-by-step explanation:

Distance = rate * time

D = 70 miles

t = 35 minutes

So that gives us:

70 mi = r(35 min)

Divide both sides by 35 min:

70/35 mi/min = r

simplify:

2 mi/min = r

If you wish to convert to miles per hour, remember that there are 60 minutes in an hour:

2 * 60 = 120

120 mph = r

B

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Here m = , thus

y = x + c ← is the partial equation

To find c substitute (- 4, - 9) into the partial equation

- 9 = - 2 + c ⇒ c = - 9 + 2 = - 7

y = x - 7 ← equation of line