The amount of data left on a cell phone plan is 6 GB after eight days 1.5 GB of data is use each day how much that is available at the beginning of the cycle

18GB was present at the beginning of the cycle

Step-by-step explanation:

We are asked to calculate the amount of data initially available at the beginning of a circle given that what is left now is 6GB and 1.5GB have been used daily for the past 8 days.

To calculate the amount of data initially present, what we do is to simply add what is left now plus what has been used.

We know what is left now which is 6GB. What we are to calculate is what had been used. To know what had been used, we simply multiply the number of days by 1.5GB

This is same as 1.5 * 8 = 12GB

The initial amount of data present is thus 12GB + 6GB = 18GB

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.