Tony's test score average increased by 11 points this semester. Write a signed number to represent this change in average.
+11
A car corporation produced 1480 fewer cars this month than last.
Write a signed number to represent this month's change in production.
-1480
question 1# Leila lost 45 dollars from her pocket.
Write a signed number to represent this change.
Question 2# The temperature rose by 12 degrees Fahrenheit today. Write a signed number to represent this temperature change.
1# -45 (as the loss of money implies a negative change)
2# +12 (as the rise in temperature implies a positive change)
4(x + 6) - 6x
Expanding the expression:
4(x + 6) - 6x = 4x + 24 -6x
Combining like terms:
= (4x - 6x) + 24
= -2x + 24