8. Which of the following means 3n + 7 = 16?
a. 7 more than 3 times a
number is 16.
b. 3 more than 7 times a
number is 16.
c. 7 less than 3 times a
number is 16.
d. 10 times a number is 16.

A

Step-by-step explanation:

3n means that you are multiplying a number n by 3. 3n+7 means adding 7 to that product. 3n+7=16 means that that sum is equivalent to 16. Hope this helps!

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.

answer: 5100 just subtract

step-by-step explanation: