Robert earned $37.38 on monday, $20.46 on tuesday, and $49.84 on wednesday. he calculated that he earned $87.22 for the three days. estimate the amount robert earned. is his calculation reasonable?

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step-by-step explanation:

agngel

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).