Systems Of Equations
For what value of B would the following system of equations have an infinite number of solutions?
3x+5y=27
12x+20y=3b
(A) 36
(B) 27
(C) 36
(D) 81
(E) 126
Solve this equation
6r+7=13+7r
{-6}
suppose a model airplane club publishes a newsletter. expenses are .90 for printing and mailing each copy, plus $600 total for research and writing. the price of the newsletter is $1.50per copy. how many copies of the newsletter must the club sell to break even?
x=1000
They must sell 1000 copies to break even.
Solve this Equation
13-4x=1-x
{4}
Your teacher is giving you a test worth 100 points containing 40 questions. there are two-point and four-point questions on the test. how many of each type of question are on the test? X= 2pt questions, Y=4pt questions
30 2pt questions
10 4pt questions
Solve this Equation
-7x-3x+2=-8x-8
{5}
A movie theater sells tickets for $8.00 each, with seniors receiving a discount of $2.00. one evening the theater sold 525 tickets and took in $3580 in revenue. How many of each type o ticket were sold?
x=#of $8 tickets Y=#of $6 tickets
215 $8 tickets
310 $6 tickets
Solve this Equation
-8-x=x-4x
{4}
8 pair of jeans and 10 shirts cost $80. The cost of 9 pair of jeans and 5 shirts is $65. Find the cost of each pair of jeans and each shirt.
X=Jeans Y=Shirts
X=5 Y=4
Solve this Equation
-14+6b+7-2b=1+5b
{-8}