Answer:
f(x) = 6x^3 + 3x^2 - 3x - 7
is a polynomial function
degree 3
number of terms 4
leading coefficient 6
First question: Answer is D
∵ Area of rectangle is L ⋅ W = 12 ⋅ 6 = 72 
∵ Area of the shaded region is 36 
∴ The area of the unshaded region =
the area of the whole rectangle - the shaded region =
72 - 36 = 36 
∴ The area of the unshaded region = 36 
Second question: Answer is A
∵ Area of triangle is
Bh =
⋅ x ⋅ 4 = 32
∵ Height (h) = 4 ft
∴ Base (B) =
⋅ 2 = 8 ⋅ 2 = 16
∴ Base (B) = 16 ft
Third question: Answer is D
6.009 = 6 + 0.009
Fourth question: Answer is B
104.0032 = One hundred four and thirty-two ten-thousandths
Fifth question: Answer is B
∵ Perimeter of rectangle = 2(W+L) =
2(80+120) = 2 ⋅ 80 + 2 ⋅ 120 = 160 + 240 = 400 
∴ He needs 400
of fencing
50.8 centimeters is equal to 20 inches.
Answer:
One solution
Step-by-step explanation:
They have isolated y for you in both equations so you can plug either one into the other.
y = 3x - 1
2x + 7 = 3x - 1
isolate the x
7 = x - 1
x = 8
Go back to the original and plug 8 into x to get y.
y = 2 (8) + 7
y = 16 + 7
y = 23
This means at (8, 23) y = 2x+7 is equal to y = 3x-1. In other words they share a point at (8, 23). This is the only solution because for any other x and y they'd not be equal.