Christine had already knitted 15 rows of a scarf. She knitted r more rows over the weekend. Choose the expression that shows the number of rows Christine has knitted in all.Choices:(A) 15−r(B) r−15(C) 15+r(D) 15
Q. Christine had already knitted 15 rows of a scarf. She knitted r more rows over the weekend. Choose the expression that shows the number of rows Christine has knitted in all.Choices:(A) 15−r(B) r−15(C) 15+r(D) 15
Start with 15 rows: Christine started with 15 rows, then knitted r more.To find the total, add r to 15.Calculation: 15+r
Calculate total by adding r: Check the choices to find the matching expression.Correct expression: (C) 15+r
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