2x + 3 ≥ 13 find the solution set, the optional answers are: (a) {x | x ≥ 5} (b) {x | x > 5} (c) {x | x < 5} (d) {x | x ≤ 5}

Answer 1

2x + 3 > 13'

subtract 3 from both sides

2x > 10

divide both sides by 2

x > 5

check the solution by plugging in some x values, less than, equal to and greater than 5

such as 4, 5 and 6

2(6)+3= 15 > 13

try x =5

(2(5)+3 =13

try x= 4

2(4)+3 = 11 <13

Answer 2

2x + 3 ≥ 10

2x ≥ 10

x ≥ 5