The student council hosted a bake sale. Of the 40 items brought to sell, 18 were brownies. What percent of the bake sale items were not brownies?

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  55%

Step-by-step explanation:

The 22 items that were not brownies were ...

  22/40 × 100% = 55%

of the total number of items brought to sell.

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

2.83941151 would be the answer you're looking for! : )