Seven decreased by 3 times some number, n
Twice the difference of p and 10
4 times the sum of 3 and x
10 less than twice a number w
A mechanic charges $45 per hour and parts cost $125. Write an expression for the total if the mechanic works h hours.
Which expression represents the perimeter of a rectangle with a length of 8 mm and a width of x mm?
The quotient of the three times a number and the quantity 4 plus the same number. Use n.
5 less than a number all multiplied by the quantity of three times the number. Use n.
Veronica writes the expression 3n – 5 + n given the verbal expression “three times a number minus 5 plus the same number”. Cory writes the expression 3n – (5 + n). Who do you agree with? Justify your answer.
Margo said that the answer to number 5 was that they were both correct in this case: 3n - 5 + n and 3n - (5 + n). Is Margo correct or incorrect, and why?
Write an algebraic expression that represents "3 times a number less than the sum of twice the number and 1". Use n.
BONUS: A rectangle has a length of n and a width that is the length minus 1. Write an expression that could be used to find the quotient of the perimeter divided by the area.