Write the quadratic function simplified and written in standard form
3 + 5x – 5x² – 2x + 4

Step-by-step explanation:

Add the like terms

3 + 5x – 5x² – 2x + 4 =  7 + 3x - 5x²          {5x -2x = 3x and  3 + 4 = 7}

= -5x² +3x + 7

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

your answer would be 10x - 1