Seventy percent of a roof, or 1400 square feet of the roof, has been re-shingled. what is the total area of the roof?

Based on the information given the total area of the roof is 2000 sq ft.

Using this formula

Total area=Square feet of roof/Roof percentage

Where:

Square feet of roof=1400

Roof percentage=70%

Let plug in the formula

Total area=1400/.70

Total area=2000 sq ft

Inconclusion the total area of the roof is 2000 sq ft.

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yes yes yes yes yes yes yes yes yes

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.