Jeff’s mom asks him to water the grass before he leaves at 9:50 a. m. for swim practice. There are five locations that require different sprinkler settings, and each location requires 25 minutes of water. Jeff assumes it will take him no more than 2 minutes to change the sprinklers, which must be done for 4 locations. What is the latest time that Jeff can start watering and still be ready to leave for swim practice at 9:50 a. m.?

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

3.07*10^-4

move the decimal 4 places to the left

.000307