Third Form Review Quiz

Write in standard form:

0.0089

• 8.9 × 10^-4

• 0.89 × 10^-4

• 8.9 × 10^-3

• 0.0089 × 10^-3

This mysterious hand went to the mall and saw a massage chair that he would have to take a loan out to purchase. The total of the loan was $6600. The bank said that he could get a simple interest rate of 8% for 5 years. What is the total amount that the mysterious hand will pay for the chair?

• $2600

• $924

• $9240

• $260

Jack deposited $1,400 in his bank account. After 3 years, the account earned $294 in interest. Find the simple interest rate.

• 5%

• 8%

• 7.25%

• 7%

For eating dinner at a restaurant Robert was charged $80 plus 15% tax. Robert's total bill was

• $65.00

• $68.00

• $92.00

• $95.00

A salesman is paid 5% of his sales as a commission. His sales for last month were $3200. How much was he paid?

• $160

• $270

• $320

• $3040

Share 80 grams in the ratio 5:3

• 60 g : 20 g
• 30 g : 50 g
• 50 g : 30 g
• 20 g : 60 g

 $\left(y^9\right)^{-2\ }$  

•  $y^{18}$  

•  $y^{11}$  

• 
  

   $\frac{1}{y^{18}}$  

•  $y^9$  

Calculate 3a⁸ x 4a²

• 12a¹⁰
• 12a¹⁶
• 7a¹⁰
• 7a¹⁶

 $-3\left(x-2\right)$  

•  $-3x-2$  

•  $-3x-6$  

•  $3x+6$  

•  $-3x+6$  

 $2x\left(x+3y\right)-y\left(2x-4y\right)$  

•  $2x^2+6xy+4y^2$  

•  $2x^2+4xy+4y^2$  

•  $2x^2+2xy-4y^2$  

•  $2x^2-4xy+4y^2$