The area (in square feet) of the school sign can be represented by $15x^2-x-2$. A. Write an expression that represents the length of the sign. Length: ft Question 2 b. Describe two ways to find the area of the sign when $x=3$. 1. Substitute for into the expression for the area $15x^2-x-2$ , then simplify. 2. Substitute for into the expressions for the length $\text{(}$ $\text{)}$ and width $\left(3x+1\right)$ , simplify each, then multiply these two numbers

don't know what that says sorry i can't you

step-by-step explanation:

idk what it says

if x = 1, then the answer is 3.5

80° is the measure of gh

step-by-step explanation:

circle f is congruent to circle j

we have two circle with center f and j.

both circles are congruent. the radius of the circle would be equal.

see the attachment for the circle.

we are given ∠efd ≅ ∠gjh

therefore, arc (ed) = arc (gh)     (∴ circle f is congruent to circle j)

but ∠dfe=80°=arc (ed)

therefore, arc (gh) = 80°

thus, 80° is the measure of gh