Lori bought a shirt and a hat at a half off sale. If she spent a total of $21 on the two items, what was the original price of the hat?

4x+3 solve the equation

People drive, on average, 14578 miles per year, about how many miles each week is that?

Solve for x: 1/x = 6/5x + 1

Mix numbers between 3-4 with a product of 9 and 12

Three bags of wheat, two bags of corn, and one bag of oats weigh the same as one bag of wheat, one bag of corn and five bags of oats.

9a - [7 - 5 (7a - 3) ]

One eighth of tonys books are mystery books he has 3 mystery books how many books dose tony have in all?

If the mean of the following distribution is 91 and sum of frequencies is 150 find x and y

Find the value of the spring constant for the spring in trial i. use 0.367 s for the value of the period. the mass of the suspended block is 0.400 kg. enter your answer in n/m with three significant figures.

5 + 3x = - 1 + 6 (6x + 1)