Atour boat left the dock and traveled west at an average speed of 10 mph. a smaller fishing boat left some time later traveling in the same direction but at an average speed of 12 mph. after traveling for 10 hours, the fishing boat caught up to the tour boat. the tour boat left hours earlier than the fishing boat.

a. 2
b. 11
c. 10
d. 18

The answer is D.

Step-by-step explanation:

Time = Distance / Speed

Distance = 12 *10 =120

Time = 120 / 12

Time = 10

Please correct if me if I'm wrong

3.4 pizzas

step-by-step explanation:

given is a scatter plot showing number of pizzas sold during weeks for different issues of coupon

y represents number of pizzas sold and x number of coupons issued

y is marked verticaly and x horizontally

the trend line is given as

y =3.4x+43

this says that even when no coupon is issued pizzas sold will be 43

and rate of change of pizza sold for 1 unit of coupon = slope = 3.4

i.e. when x increases by 1 unit y increases by 3.4 units

hence for each additional coupon issued 3.4 pizzas more will be sold