Joseph is playing a game. he started with 15 points. in the first round he lost 30 points. in the second round he won 25 points. in the third round he lost 15 points. write and solve an expression to show the change in joseph’s score.

30-15=15+25-15=40-25 i think.

you have to add all the points he won and all the points he lost not toghether separatly then subtract all the points he lost from the ones he won

step-by-step explanation:

always plug in x. in this case, x equals 4.

i'm going to first solve 4(2+3x)

1) 4(2+3(4)) use pemdas to solve.

i'm going to multiply whats in the parenthesis first, so 3 times 4=12.

2)4 (2+12) i'm then going to multiply 4 by both numbers in the parenthesis (because multiplying comes before adding)

4 times 2= 8.   4 times 12= 48

4) (8+48)= 56 (answer)

i'm then going to solve 8+12x and plug in 4 for x.

1) 8 +12(4)

multiplying comes before adding, so i'm gonna multiply 12 and 4.

12 times 4= 48.

2) 8+48=56

both equal the same!

addition

step-by-step explanation: