Factorise the following:​

49x-16/35

7²x-4²/(7×5)

taking LCM

(7²×7×5x-4²)/35

separate

1715x/35-4²/35

taking common 1/35

1/35(1715x-16)

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

i would need to see the dot plot : )