1. 500 + b = 200, b = ? 2. -1 + c = -2, c = ?

3. d + 3567 = 0, d = ?

(please answer I would be so grateful) : )

In a probability experiment, karen flipped a coin 76 times. the coin landed on heads 32 times. what percentage of the coin flips resulted in tails? round to the nearest percent. a. 58% b. 65% c. 42% d. 60%

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way

X+y=-4 x-y=2 use elimination with adding and subtraction