13) 3 bags of Brand X dog food and 4 bags of Brand Y dog food costs $18,
while 4 bags of Brand X dog food and 3 bags of Brand Y dog food costs
$17. What is the cost of each bag of Brand X?

the cost of brand x dog food is $2

Step-by-step explanation:

Let brand X dog food be represented as A

Let Brand Y dog food be represented as B

3 bags of Brand X dog food and 4 bags of Brand Y dog food costs $18,

3A+4B=18

4 bags of Brand X dog food and 3 bags of Brand Y dog food costs

$17.

4A+3B= 17

Using Elimination method

Multiply

A = -14/-7= 2

Since the brand X dog food is represented as A

the cost of brand x dog food is $2

income. 10x+1300

expenses 3x+(1800+1500)

expenses 3x+3300

to break even:

income = expense,

10x + 1300 = 3x + 3300,

solve for x.

step-by-step explanation:

mark brainliest

we need to divide the number of toy dinosaurs, 156, by the number of brothers, 4:

in order to estimate, we can use compatible numbers:

156 ÷ 4

  ↓

160   ÷ 4 = 40        

the correct answer is a).