A recipe calls for 2.5 cups of sugar for 2 jars of lemonade. If Marc want to make 7 jars. How many cups of sugar does he need?

Step-by-step explanation:

well if 2.5 is 2 jars 6 jars is 7.5 cups

2.5÷2 1.25

1.25x7

is 8.75 cups of sugar

8.75 cups of sugar

Step-by-step explanation:

2.5= 2 cups

1.25= 1 cup

y=1.25(x)

y=1.25(7)

y=8.75

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