You need to buy potato chips. the 10-ounce bag costs $1.10. the 40-ounce bag costs $3.96. which bag is the better buy?

the 40 ounce bag is better

Step-by-step explanation:

this is because if you multiply $1.10 by 4 you get $4.40. This means that the 40 ounce bag is cheaper

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