Find sum of all numbers divisible by 7 between 100 and 200

The numbers which are divisible by 7 between 100 and 200 are

105,112,119......,196

Since, the difference between the consecutive terms is constant. i.e.,

The first term

The common difference

The last term

Therefore the sum the terms is

Therefore, the sum of all the numbers between 100 and 200 which are divisible by 7 is 2107.

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.