Quiz over Sec 8.1, 8.4, 8.4

Convert 0.15% to decimal form.

• 0.15

• 0.015

• 0.0015

• 15

• 0.625

• 6.25%

• 62.5%

• none of these

In the formula I=prt, what does "p" represent?

• percent of interest

• initial investment

• time

• total amount of investment

An $800 investment earns 2.9% simple interest for 18 months. Which of the following shows the correct calculation for how much interest will be earned?

• I = 800(2.9)(18)

• I = 800(0.029)(18)

• I = 800(0.029)(1.5)

• none of these

Emily’s parents put $1500 in her bank account for college tuition at a simple interest rate of 8.25%. What will be the balance after 18 years?

• $22,275

• $2227.50

• $12,375

• $3727.50

78 is what percent of 450?

• 5%
• .17
• 17%
• 18%

The sales tax on a new car is $979.60. The car sold for $15,800. What is the sales tax rate? 

• 5%
• 0.062
• 6.2%
• 62%

What is the total price of a book if Barnes and Nobles gets it for $4.25 and the markup is 30%?

• $55.25
• $1.28
• $5.53
• $4.38

The regular price of a scooter is $65.50. It is on sale for $52.40. What is the percent decrease from the regular price to the sale price of the scooter? 

• 35%
• 25%
• 30%
• 20%

A $2500 investment earns 3% annual interest compounded weekly over a period of 5 years. What is the (simplified) exponent in the compound interest formula?

• 52

• 5

• 260

• 10.2