I need help and steps with this please TwT

ans=-1

Step-by-step explanation:

we know that two negatives result in a positive

2-(-4)+(-7)

2+4-7=6-7=-1

-1

Step-by-step explanation:

Given: y = 7

Plug in 7 for y in the equation:

2 - (-4) + (-(7))

Note that, when directly next to each other:

two negative signs = positive sign

one negative and one positive sign = negative sign

two positive signs = positive sign

Simplify:

2 - (-4) + (-(7)) = 2 + 4 - 7 = 6 - 7 = -1

-1 is your answer.

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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