Adding & Subtracting Polynomials
Simplify:
12x+7x+2x
21x
What is the formula for Simple Interest?
I=PRT
P= Principle amount
R=Interest rate
T=Time in years
Simplify the expression:
(x^2*x^7)
x^9
Name the property:
(5*4)*2=5*(4*2)
Associative property of multiplication
Simplify:
14xy-5xy
9xy
A 2-year loan of $500 is made with 4% simple interest. Find the interest earned.
I=(500)(0.04)(2)=40
Simplify the expression:
(6y^15)/(2y^11
3y^4
Solve the following equations for 'x'
x/5=7
x=35
Simplify:
5y+3x+6y-x
11y+2x
Doug made a 3 year investment. The interest rate was 4.5%. After 3 years, he earned $675 in interest. How much was his original investment?
675=x(0.045)(3)x=5000
Simplify the expression:
(5y^16*3y^-14)
15y^2
There are 4 violins out of 25 instruments in the Landers town band. What percent of the instruments are violins?
16%
Simplify:
( x^2+4x+3)+(7x^2-6x+3)
8x^2-2x+6
Sarah deposits $4,000 at a bank at an interest rate of 4.5% per year. How much interest will she earn at the end of 3 years?
I=(4000)(.045)(3)=$540
Simplify:
(a^-13)/(a^-6)
a^-7
Solve the equation for 'x'
-3(6x+5)=-51
x=2
Simplify:
(13xy^2-30y+4x)+(10xy^2+y-7x)
20xy^2-29y-3x
A total of $1,200 is invested at a simple interest rate of 6% for 4 months. How much interest is earned on this investment?
I=(1200)(0.06)(1/3)=24
Simplify:
(48z^18)/(24z^6)
2z^12
Matt's mother is 3 times as old as Matt. His grandmother is twice as old as Matt's mother. The sum of their three ages is 120. How old is Matt, his mother, and his grandmother?
Matt is 12 years old
Matt's mother is 36 years old
Matt's grandmother is 72 years old