Chelsea wrote several equations and determined that only one of the equations has exactly one solution. Which of these equations has exactly one solution 4(x + 3) = 7x - 6

Elijah brought a total of 16 pounds of peanuts and cashew nuts and paid $49.50. if peanuts cost $2.75 per pound and cashew nuts cost $3.25 per pound, how many pounds of cashew nuts did he buy?

Cybil flips a coin and rolls a fair number cube at the same time. what is the probability that she will toss tails and roll a number less than 3?

Collin did the work to see if 10 is a solution to the equation r/4=2.4