the equation 9(u - 2)+1.5u = 8.25 models the total miles michael traveled one afternoon while sledding…

the equation 9(u - 2)+1.5u = 8.25 models the total miles michael traveled one afternoon while sledding, where u equals the number of hours walking up a hill and (u - 2) equals the number of hours sledding down the hill. which is the value of u?\no u = 0.25\no u = 0.75\no u = 1.1\no u = 2.5

the equation 9(u - 2)+1.5u = 8.25 models the total miles michael traveled one afternoon while sledding, where u equals the number of hours walking up a hill and (u - 2) equals the number of hours sledding down the hill. which is the value of u?\no u = 0.25\no u = 0.75\no u = 1.1\no u = 2.5

Answer

Answer:

D. $u = 2.5$

Explanation:

Step1: Expand la expresión

$9(u - 2)+1.5u=8.25$ se convierte en $9u-18 + 1.5u=8.25$.

Step2: Combinar términos semejantes

$(9u+1.5u)-18 = 8.25$, es decir $10.5u-18 = 8.25$.

Step3: Isolar el término con $u$

$10.5u=8.25 + 18$, entonces $10.5u=26.25$.

Step4: Calcular el valor de $u$

$u=\frac{26.25}{10.5}=2.5$.