There are 40 students in your class. on one test, 95% of the students received passing grades. how many students failed the test?

2 students failed

Step-by-step explanation:

Lets say the variable y is the number of students who failed.

And to find the percentage of students who failed you subtract 95% from 100%:

So, then the equation is:

Simplify:

Divide 100 from both sides:

Simplify:

y=2

the answer is 62

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.