Ty has a savings account that increases 3.2% per year.

If m represents the amount of money he saves, write an equation to represent his balance, b, after a year, assuming he makes no additional withdrawals or deposits.

Explain what the constant of proportionality means for the equation.

y=0.85x

Original Price : $24.57

6% sales tax

Find the amount of tax.

Original Price: $186.49

15% off

Find price after the discount. 

Original Price $74.99

30% off

7% sales tax

Find the final amount.

To reduce cost, a company reduced the size of their cracker boxes by 12%.

If b was the size of the box before the reduction, write an equation to represent the size of the new box, a.

Explain what the constant of proportionality means for the equation.

y = 1.36x

Original Price: $639.79

60% off

Find discounted price. 

Original Price: $84.55

35% off

Find amount saved. 

Original Price: $18.52

130% mark up

6.5% sales tax

Find the final price.

To make a profit, a store marks up all merchandise by 125%.

If c is the cost before the mark up, write an equation to represent the price after the mark up, p.

Explain what the constant of proportionality means for the equation.

y = 0.19x

Original Price: $31.72

18% tip

Find amount of tip.

Original Price: $28.16

90% mark up

Find total price.

Original Price: $11.14

8% tax

20% tip

Find price after tax and tip.