Amber measured the length of her yard by walking from one end of the yard to the other. she counted 44 steps assuming that each of her steps was 1/2 m in length, amber said the length of her yard was 44 * 1/2= 22. the actual length is 19m what is the percent error

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