The scatter plot below shows the number of pizzas sold during weeks when different numbers of coupons were issued. The equation represents the linear model for this data. y = 3.4x + 43 According to the model, how many more pizzas are sold for each additional coupon issued? 1 pizzas 3.4 pizzas 4.3 pizzas 43 pizzas 46 pizza A graph measuring average number of pizzas sold nightly in relation to number of coupons issued. A line indicates that pizzas sold increases as number of coupons issued increases