Answer:
if you search the Question up the fist thing to pop up should say Gr7_Math_Revision_T2. on the 7th page your answer, I think. is there
Explanation:
Step 1 
Write and solve the inequality: 
2,500 + 40a ≥ 4,000, or 40a ≥ 1,500 
a ≥ 37.5 
Step 2 
If the shelter places 30 cats and 10 dogs, 
or 40 animals, that will be enough to meet 
its goal, because a = 40 is a solution to the 
inequality a ≥ 37.5.