Catie is 3 years older than her brother. the sum of their ages is no more than 31.write an inequality that can be used to representthis situation, wherexrepresents catie's brother's age. don’t combine like terms.

For this case we have to:

x: Be the variable that represents the age of Catie's brother

y: Be the variable that represents Catie's age

So, we have:

Substituting the first equation in inequality we have:

sure i'm up for it

step-by-step explanation:

third choice down

step-by-step explanation:

the first inequality is based on the number of adults and campers, and the second inequality is based on the cost of feeding both the adult and the camper.

we know that there is room for 525 people max.   it's ok to have less than 525, but it's not ok to have more than 525, so the inequality is less than or equal to.   the number combination of adults (x) and campers (y) cannot exceed this 525 max.   therefore:

x + y ≤ 525

now we talk about cost.   it costs $9 to feed one adult, so depending upon the number of adults you have (x) depends upon how much it will cost to feed that number of adults.   same with the campers, who cost $5 to feed.   the adults can be represented by 9x and the campers can be represented by 5y.   since the budget cannot exceed 1,200, the second inequality is:

9x + 5y ≤ 1200