Answer:
See explanation
Step-by-step explanation:
<u>Linear</u> expression is usually an expression of 1st degree.
A. The product of a number and seven 
Correct, linear
B. The sum of three consecutive numbers.
Let the smallest number be n, the next number is n + 1 and the last number is n + 2. Then their sum is

Correct, linear
C. The square of a number times three.
Let the number be n, then its square is
and the square of a number times three is

Correct, nonlinear
D. Twice the sum of a number and 8.
If the number is n, then the sum of the number anf 8 is n + 8. Twice the sum is

Incorrect, linear
E. The cube of a number divided by two.
If the number is n, then its cube is
The cube of the number divided by 3 is

Correct, nonlinear
Area of the figure:
Af = a² + 2 a²/4 π = 2.57 a²
Area of the shaded region:
As = 2 a²/4 π = 1.57 a²
x = (1.57 · 100) / 2.57 = 61 % ≈ 60 %
Answer: B) about 60 %
Answer:
hope the pics below helps!!
Plz mark brainliest :DD
45/8 or 5 5/8
5/8 divided by 1/9 - 5/8 x 9/1
I think it’s the 1st one because it’s close too what it is when I work it out