Answer: 9x+4
Step-by-step explanation: add 6x plus 3x to get <u>9x</u>
then -4 plus 8 to get<u> 4</u>
<u>9x+4</u>
Answer:
k12
Step-by-step explanation:
The answer to (-3) + (4) is 1
Answer:
65
Step-by-step explanation:
let the son's age be x then the man's age is 5x
In 13 years
son's age = x + 13 and man's age = 5x + 13 and he is 3 times as old as son
5x + 13 = 3(x + 13)
5x + 13 = 3x + 39 ( subtract 3x from both sides )
2x + 13 = 39 ( subtract 13 from both sides )
2x = 26 ( divide both sides by 2 )
x = 13 ← son's present age
5x = 5 × 13 = 65 ← man's present age
<span>The rate of change is a rate that describes how one quantity changes in relation to another quantity.</span>
