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tobin is solving the equation 3 (x -1.25) = 11.25 his work is shown below. (see pics)

what mistake did tobin make?

tobin did not distribute the 3 correctly.
tobin should have subtracted 3.75 from each side.
tobin should have divided by 3.
tobin did not make a mistake.
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Write 37/22 as a decimal rounded to the nearest hundredth.

Susan is paying $0.30 per $100 on her $483,000 home in homeowners insurance annually. if her annual homeowners insurance premium is divided into twelve equal monthly installments to be included on each of her monthly mortgage payments of $2,128.00, what is her total monthly payment?

Out of the 150 students at a summer camp, 72 signed up for canoeing. there were 23 students who signed up for trekking, and 13 of those students also signed up for canoeing. use a two-way table to organize the information and answer the following question: approximately what percentage of students signed up for neither canoeing nor trekking?