Percent Applications
Ellie bought a pair of jeans on sale for 15% off. If the jeans were originally $35, how much did she save?
$5.25
Simplify
2 times the square root of 72
8 times the square root of 2
What are the square roots of 36?
6 and -6 If you put just 6, it is wrong!!!!!!!!!!
Name 3 properties of exponents and state their rules.
Product - keep base, add the exponents (multiply coefficients)
Quotient - keep based, subtract the exponents (divide coefficients)
Power - keep base, multiply the exponents
Negative - flip the base with a negative exponent and make exponent positive
Zero - base to a zero power will equal 1
(2.13 × 〖10〗9)(5.6 × 〖10〗-7)
1.928 x 〖10〗3
Rachel left an 18% tip on a $24 lunch bill. How much was the tip?
$4.32
Simplify
-2 times the cube root of 72
-4 times the cube root of 9
What are the cube roots of -27?
-3
If you say 3 and -3 you are wrong.
Write 3x-4 using a positive exponent
3/x to the fourth
(1.8 × 〖10〗2)/7.5 x〖10〗0)
2.4 x 10 1
A jacket used to cost $54. After a 40% discount, what is the new cost of the jacket?
$32.40
(2 times the square root of 6) - (2 times the square root of 24)
-2 times the square root of 6
What two whole numbers does the cube root of 49 fall between?
2y9 x 4y5
8y14
(1.6 × 〖10〗3) + (4.77 × 〖10〗2)
2.077 × 10 3
Hank put $10,000 in an account for 10 years. The account earned 2.5% simple interest. How much interest had been earned by the end of the 10 years?
$2,500 in interest
Simplify
The square root of 18 divided by 3
The square root of 2
What two whole numbers would the square root of 38 fall between?
Greater than 6 but less than 7
24x3 divided by 6x5y
4/x2y
(9.475 × 〖10〗5) – (1.9 × 〖10〗3)
9.456 × 10 5
Jasmine has a loan that charges a 3% interest rate that compounds monthly. The original amount of the loan was $2,000. How much will she owe altogether after a year (12 months)?
$2,851.52
Simplify
Square root of 27 divided by the square root of 24
3 divided by (2 times the square root of 2)
What two perfect squares would the square root of 97 fall between? Which whole number is it closest to? How do you know?
The square root of 81 and the square root of 100. It is closer to being 10 because 97 is closer to 100 than to 81.
(2x7y-4z-2)3
23x21y-12z-6 = 8x21/y12z6
Rhode Island is approximately 1.5 x 103 square miles while Texas is 2.7 x 105 square miles. How many square miles larger is Texas than Rhode Island?
Subtract
2.7 x 105 - 1.5 x 103
2.7 x 105 - .015 x 105
2.685 x 105