Step-by-step explanation: x would represent the number of multiple choice questions and y would represent the number of short response questions. the multiple choice questions were 3 points meaning that you need to find x. the short answer response questions were 8 points meaning you need to find y. altogether you need to get 100 points. for the second equation you have 20 questions that need to be both multiple choice and short response. therefore the second equation would be x+y=20. if you solved this, the answer would be that x equals 12 and y equals 8. hope this helped! :))
Just use the guessing method. I started with 15 and then went to 18. and got it right. A nickel a worth five cents so 18 times 5 = 90 cents. 18/3 is 6 and 18+6=24. 24/2 is 12 and 12-3 is 9. A dime is worth 10 cents so 9 times 10= 90 cents. A quarter is worth 25 cents and 6 times 25=150. 150+90+90+330 If you get this right can i please have brainliest