Algebra 1 pls help! Brainilest for best correct answer

C

Step-by-step explanation:

since f(x)= 2x+1 ,  then F(a+2) = 2 (a+2) + 1

everywhere you see x , you replace x with (a+2)

F(a+2) = 2(a+2) + 1

F(a+2) = 2a+ 4+ 1

F(a+2) = 2a+5

therefore the answer is C

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