On a particular day, the wind added 5 miles per hour to jaime's rate when she was rowing with the wind and subtracted 5 miles per hour from her rate on her return trip. jaime found that in the same amount of time she could row 46 miles with the wind, she could go only 26 miles against the wind. what is her normal rowing speed with no wind?

18 miles per hour

Step-by-step explanation:

Let x be the normal rowing speed with no wind,

∵ the wind added 5 miles per hour in the normal rate with wind and subtracted 5 miles per hour from normal rate against the wind,

⇒ Speed with the wind =  ( x + 5 ) miles per hour,

While the speed against the wind = ( x - 5 ) miles per hour,

If the distance is 46 miles with wind,

Then, time taken = hours

While, if the distance is 26 miles against the wind,

Then, the time taken = hours,

According to the question,

Hence, the normal rowing speed is 18 miles per hour

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