Answer:
7/16
Step-by-step explanation:
Answer:10 weeks
Step-by-step explanation:
900 is goal
900/90 is 10 or 10 weeks
Answer:
Jewel is 7 years old
John is 1 year old
Dave is 17 years old
Step-by-step explanation:
From the question we are told that:
Jewel age is 
John age 
Dave's age a Year ago

So that Dave.s age this Year could be

Simplifying Equation for Dave's age we have





Dave is 17 years old
Therefore
Johns age is



John is 1 year old
.416 is rounded to the nearest thousandth