Answer:
2x² +2x - 12
Step-by-step explanation:
area of rectangle = length X width
length = x+3
width = 2x - 4
Area = (x+3)(2x-4)
= x(2x-4) +3(2x-4)
= 2x² - 4x + 6x - 12
= 2x² +2x - 12
Answer:
Step-by-step explanation:
y=4x+30
Each number is mutliplied by 3 and then numbers 2,3,4,5,... are added successively.
2*3+2=8
8*3+3=27
27*3+4=85
85*3+5=260
260*3+6=786
So it's 786.
Btw, the general formula for this sequence is 
Answer:
217.0588235294118
Step-by-step explanation:
Convert all height to inches.
5' 8" = 68 inches
6' = 72
205/68 = 3.014705882352941
Height/Weight Ratio * Evan's Height = 217.0588235294118
The first six composite numbers are 4, 6, 8, 9, 10, 12. Their average is their total divided by their number.
... 49/6 = 8 1/6