18sqrt(x)
I'm assuming that 3(sqrt(x))5 is equal to 15sqrt(x). If that is the case, just perform the multiplication within each term and treat the sqrt(x) as a variable when you add the all together. It is okay because they are like terms.
Answer:

Step-by-step explanation:
To write an algebraic expression from words, translate each word into a symbol. Division can be shown with a division sign or a fraction sign. Create a fraction with a 12 in the numerator and the variable t in the denominator.
The answer is $10 because 123=$6 and 4 hours is =$4 6+4=10
Answer:
=16+9=25
Step-by-step explanation:
I believe the answer is 21
21 × 6 = 126
and both numbers are divisible by 3