Can someone tell me if my answer for question two is wrong or not and why Can someone review my work and tell me what I should fix please (brainiest)

Cheryl writes 7 fewer posts than Kevin on a social media site.

Answer the questions to write an algebraic expression. Then evaluate the expression for the given value.

1. Choose a variable to represent the number of posts Kevin writes.

variable: x

2. Which operation (addition, subtraction, multiplication, or division) applies to this situation? Justify your choice.

Subtraction

Cheryl’s post is less than Kevin’s

3. Use your variable and the operation you identified to write an expression for the number of posts Cheryl wrote.

Cheryl’s number of posts: x - 7

4. If Kevin wrote 21 posts, how many did Cheryl write?

x = 21

21-7 = 14

So, Cheryl wrote 14 post on her social media site.

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.

use distributive property on all like terms and change your signs if you have a double negative or if you have positive/negative

i would say true? if the unit was informational and it "refreshed your understanding", then true.

the answer would be a 24

step-by-step explanation:

c=2πr=2·π·3=24