I need help with this

  -26

Step-by-step explanation:

Use the given formula to find the next terms.

  c(1) = 6 . . . . . . given

  c(2) = c(1) -16 = 6 -16 = -10

  c(3) = c(2) -16 = -10 -16 = -26

The third term in the sequence is -26.

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