An expression is subtracted from a term as shown below 4x-(x-3y). Evelyn rewrites the problem as 4x-x-3y. Did evelyn write an equivalent expression to the original problem

No she didn’t

Step-by-step explanation:

The expression to be written is 4x - (x-3y)

Now what she wrote was 4x - 3 -y

Her mistake was that she was supposed to multiply the subtraction symbol preceding the bracket with every term inside the bracket.

Thus the correct thing she would have written is;

4x - (x -3y) = 4x - x + 3y

4x - x + 3y is the equivalent expression to 4x - (x-3y)

lo.lll

step-by-step explanation:

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.