1.) Last year, Diane biked k miles. This year, she biked

516 miles. Using, k write an expression for the total number of miles she biked?

2.) Twice the difference of a number and 4 equals 3?

3.) 57 decreased by twice Julie's savings?

4.) 153 is the product of Delia's height and 9?

5.) Kaitlin purchased n notebooks. They were 5 dollars each. Write an equation to represent the total cost c that Kaitlin paid?

1.) k + 516

2.) 2n - 4 = 3

3.) 57 - 2s

4.) 9h = 153

5.) c = 5n

Step-by-step explanation:

All of the problems given require you to set up an expression or equation. Expressions have a variable and a coefficient or a constant. Equations also have a variable, coefficient or constant but also include an equal sign.

1.) last year's miles = k, this year = 516, so total: k + 516

2.) twice the difference of a number and 4 equals 3

twice a number = 2n; difference of this number and 4: 2n - 4; equals 3: = 3

2n - 4 = 3

3.) 57 decreased: 57 -; twice her savings: 2s: 57 - 2s

4.) 153 is: 153 =; the product of height and 9: 9h, so 9h = 153

5.) notebooks 'n', were $5 each: 5n; total cost = c, so 5n = c