Answer:
Brooke can be no older than 21
Step-by-step explanation:
M=3+2B
M+B is less than or equal to 30
3+2B+B=30
3+3B=30
3B=27
B=9
M=21
Answer:
The length on the blueprint for an actual length of 65 feet is 
Step-by-step explanation:
Given:
Scale of the blueprint is 
Length of one side of the house is 65 feet.
Now, as per given data;
1 foot in actual =
on the blueprint.
Therefore, using unitary method, we can find find the length on the blueprint for an actual length of 65 feet by multiplying 65 and
. Therefore,
Length on the blueprint for 65 feet is given as:

Therefore, the length on the blueprint for an actual length of 65 feet is 
<span> a⁴(3a² - 2a + 1)
We just have to multiply each term inside the parentheses by a⁴ .
a⁴</span><span>(3a² ) = 3a⁶
a⁴</span><span>( - 2a ) = -2a⁵
a⁴</span><span>( 1) = a⁴
Now, just addum up : 3a⁶ - 2a⁵ + a⁴</span>