Answer:
7 
Step-by-step explanation:
2
+ 5
= 2+5=7,
+
= 
= 7 
Answer:
a right triangle
Step-by-step explanation:
because if you rotate your head, then you can see that the top is at a 90 degree angle
Answer:
Maya messed up on Step 1, David messed up on Step 2
Step-by-step explanation:
Maya:
Step 1 should distribute to 5x - 15 = 12
David:
Step 2 should be 3x - 2x = -2 - 3 after you combine like terms
−4y + 4y + 2 = 2
<span> −4y + 4y = 2 -2
0 = 0 .
Anytime you have this format of 0 = 0, just know there are infinitely many.
Any number as a value of y can satisfy the equation.
</span>
Infinitely many