Answer:
No. 5x and 5x² are not like terms.
When a variable is raised to two different powers, they can not be added together.
Another way to look at it is to note that:
5x + 5x² ≡ 5x(1 + x)
It is more obvious there that 1 and x are not like terms, thus neither are 5x and 5x², though they do have common factors.
Answer:
There are 220 students at Marie's school :)
Answer:
B
Step-by-step explanation:
The point or points where a graph cuts the x axis can be found if you solve the equation f(x) = 0.

Answer:
B -- (5 smoothings)(price of 1 smoothie) + tip = $23
Step-by-step explanation:
Answer:
K = (9.2, 6.4)
Step-by-step explanation:
If MK : KP = 3 : 2, then ...
K = (3P +2M)/(3+2)
= (3(14, 10) +2(2, 1))/5 = (46, 32)/5
K = (9.2, 6.4)