Answer:
48
Step-by-step explanation:
Given
4a² + 6a - 3(a + 4) + 15 ← distribute parenthesis
= 4a² + 6a - 3a - 12 + 15 ← collect like terms
= 4a² + 3a + 3 ← substitute a = 3 into the expression
= 4(3)² + 3(3) + 3
= 4(9) + 9 + 3
= 36 + 9 + 3
= 48
Answer:
r=-4
Step-by-step explanation:
r-6=6+4r
-4r+r=6+6
-3r=12
3r=-12
r=-12/3
r=-4
B. is the answer because they have 2 variables that you need to combine “combine like terms”
If he started at 5:35 add 50 minutes to that it would be 6:25