The sum of two positive integers, a and b, is at least 30. The difference of the two integers is at least 10. If b is the greater
integer, which system of inequalities could represent the values of a and b?
a + b 2 30 b2 a + 10
a + b 2 30 b sa - 10
a + b 530b2a + 10
a+b = 30 bsa - 10

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step-by-step explanation:

relating to or denoting a system of numbers and arithmetic based on the number ten, tenth parts, and powers of ten.

step-by-step explanation:

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.