It is given that, for the three-digit numbers (abb) and (baa), and the two-digit number (aa), (abb) + (aa)+1=(baa). What is a + b?

e.

step-by-step explanation:

because there are always 10 numbers in a phone number.

look at the picture.

y-intercept for the function on a picture is 4 → point (0, 4).

y-intercept for the function

is for x = 0. substitute:

y-intercept is 8 → point (0, 8).

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