Question

Number 7 show your work , someone help please.

Answer 1

Step-by-step explanation: Replace u with (3)

Multiply 5x3+3/2

Answer: 9

Answer 2

Explanation:

remember, a variable is only a placeholder for an actual value.

so, when we get an actual value, we put it into every location of the variable in the expression and simply calculate.

6.

25/(r - 4) for r = 9

that means

25/(9 - 4) = 25/5 = 5

7.

(5u + 3)/2 for u = 3

that means

(5×3 + 3)/2 = (15 + 3)/2 = 18/2 = 9