Explain why you would make one of the addens a tens number when solving an addition problem

answer: addends are numbers used in addition problems, they refers to the numbers that are added together. addition problems can have two or more addends which can be positive or negative and they can be single digit or double digits.

when solving addition problems, it is advisable to make one of the addends a tens number because, it makes the addition operation easier to manipulate.

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step-by-step explanation:

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option c) graph of line going through 1, 4 and 3, 10

step-by-step explanation:

let y equal to margo's coin collection

let x equal to number of years

at the begining x=0, y=1 → point=(x,y)→point=(0,1)

she adds 3 coins per year, then y=1+3x

at x=1, y=1+3(1)=1+3→y=4→point=(x,y)→point=(1,4)

at x=3, y=1+3(3)=1+9→y=10→point=(x,y)→point=(3,10)

the graph of line going through (1, 4) and (3, 10), then the option c is the correct.