Lots of points

an animal shelter spends $4.50 per day to care for each cat and $8.50 per day to care for each dog. violet noticed that the shelter spent $219.00 caring for cats and dogs on thursday. violet found a record showing that there were a total of 30 cats and dogs on thursday. how many cats were at the shelter on thursday?

9 cats

Step-by-step explanation:

x = cat

y = dog

Set up equations.

x + y = 30

4.5x + 8.5y = 219

Multiply first equation by 4.5 and subtract.

4.5x + 4.5y = 135

-(4.5x + 8.5y = 219)

-4y = -84

y = 21

Substitute this y value into the first equation

x + y = 30

x + 21 = 30

x = 9

is means division by fractions

step-by-step explanation:

answer: 80,000

step-by-step explanation:

the population doubles every day.

10,000*2=20,000 day 4

20,000*2=40,000 day 5

40,000*2=80,000 day 6