The area of a rectangle is 128 ft2 2 . If the width is twice the length, what is the measure of the length?

8ft

Step-by-step explanation:

Area of a rectangle = Length × Width = LW

Area = 128 ft²

Width = W = 2L

Hence

128 = 2L × L

128 = 2L²

Divide both sides by 2

128/2 = L²

L² = 64

Square root both sides

√L² = √64

L = 8

Therefore, the measure of the Length = 8 ft

1.3

step-by-step explanation:

3x2=6   9x+6

bring down the 6 on both sides

6+6=12

12= 9x

divide by 9

12/9 =

1.3 =x

answer: c, the green line

step-by-step explanation:

there is no black line, eliminate b.

simple interest implies periodic payments, but the red line shows no payments, eliminate d.

simple interest has equal payments. if paid say every day, the graph is about a straight line (actually a stairstep).

the yellow line is not straight, eliminate a.

check: the green line is straight, answer is c.

simple interest with positive interest rate gives a straight line sloping up to the right. green line:

g(t) = $100 + ($200-$100) ÷ (20 years) × (t years)

= $100 + (4%/year) × ($100)(t years)

incidentally, the yellow line curving upward represents continuously compounded interest

y = $100 × 2^(t years / (14 assuming the yellow line hits $200 at 14 years. 2^0 is 1, so y(0) = $100; 2^(14/14) is 2, so y(14) = $200.